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6 weeks agotcg/sparc64: Unexport use_vis3_instructions
Richard Henderson [Fri, 25 Apr 2025 18:59:58 +0000 (11:59 -0700)] 
tcg/sparc64: Unexport use_vis3_instructions

This variable is no longer used outside tcg-target.c.inc.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Remove tcg_out_op
Richard Henderson [Sun, 16 Feb 2025 22:22:48 +0000 (14:22 -0800)] 
tcg: Remove tcg_out_op

All integer opcodes are now converted to TCGOutOp.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert qemu_st{2} to TCGOutOpLdSt{2}
Richard Henderson [Sun, 16 Feb 2025 22:02:00 +0000 (14:02 -0800)] 
tcg: Convert qemu_st{2} to TCGOutOpLdSt{2}

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert qemu_ld{2} to TCGOutOpLoad{2}
Richard Henderson [Tue, 11 Feb 2025 21:41:42 +0000 (13:41 -0800)] 
tcg: Convert qemu_ld{2} to TCGOutOpLoad{2}

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_{ld,st}_{i32,i64,i128}
Richard Henderson [Sun, 9 Feb 2025 20:55:15 +0000 (12:55 -0800)] 
tcg: Merge INDEX_op_{ld,st}_{i32,i64,i128}

Merge into INDEX_op_{ld,st,ld2,st2}, where "2" indicates that two
inputs or outputs are required. This simplifies the processing of
i64/i128 depending on host word size.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Remove INDEX_op_qemu_st8_*
Richard Henderson [Mon, 27 Jan 2025 01:34:19 +0000 (17:34 -0800)] 
tcg: Remove INDEX_op_qemu_st8_*

The i386 backend can now check TCGOP_FLAGS to select
the correct set of constraints.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Stash MemOp size in TCGOP_FLAGS
Richard Henderson [Thu, 23 Jan 2025 17:46:57 +0000 (09:46 -0800)] 
tcg: Stash MemOp size in TCGOP_FLAGS

This will enable removing INDEX_op_qemu_st8_*_i32,
by exposing the operand size to constraint selection.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_st*_{i32,i64}
Richard Henderson [Wed, 22 Jan 2025 21:28:55 +0000 (13:28 -0800)] 
tcg: Merge INDEX_op_st*_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert st to TCGOutOpStore
Richard Henderson [Wed, 22 Jan 2025 20:49:41 +0000 (12:49 -0800)] 
tcg: Convert st to TCGOutOpStore

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_ld*_{i32,i64}
Richard Henderson [Wed, 22 Jan 2025 05:47:16 +0000 (21:47 -0800)] 
tcg: Merge INDEX_op_ld*_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert ld to TCGOutOpLoad
Richard Henderson [Wed, 22 Jan 2025 04:44:42 +0000 (20:44 -0800)] 
tcg: Convert ld to TCGOutOpLoad

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Formalize tcg_out_goto_ptr
Richard Henderson [Tue, 21 Jan 2025 05:57:32 +0000 (21:57 -0800)] 
tcg: Formalize tcg_out_goto_ptr

Split these functions out from tcg_out_op.
Define outop_goto_ptr generically.
Call tcg_out_goto_ptr from tcg_reg_alloc_op.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Formalize tcg_out_br
Richard Henderson [Tue, 21 Jan 2025 05:17:07 +0000 (21:17 -0800)] 
tcg: Formalize tcg_out_br

Split these functions out from tcg_out_op.
Call it directly from tcg_gen_code.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Formalize tcg_out_mb
Richard Henderson [Tue, 21 Jan 2025 04:47:42 +0000 (20:47 -0800)] 
tcg: Formalize tcg_out_mb

Most tcg backends already have a function for this;
the rest can split one out from tcg_out_op.
Call it directly from tcg_gen_code.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Remove add2/sub2 opcodes
Richard Henderson [Tue, 21 Jan 2025 04:15:31 +0000 (20:15 -0800)] 
tcg: Remove add2/sub2 opcodes

All uses have been replaced by add/sub carry opcodes.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/tci: Implement add/sub carry opcodes
Richard Henderson [Tue, 21 Jan 2025 03:46:04 +0000 (19:46 -0800)] 
tcg/tci: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/sparc64: Implement add/sub carry opcodes
Richard Henderson [Tue, 21 Jan 2025 02:48:06 +0000 (18:48 -0800)] 
tcg/sparc64: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/sparc64: Hoist tcg_cond_to_bcond lookup out of tcg_out_movcc
Richard Henderson [Tue, 21 Jan 2025 00:34:47 +0000 (16:34 -0800)] 
tcg/sparc64: Hoist tcg_cond_to_bcond lookup out of tcg_out_movcc

Pass the sparc COND_* value not the tcg TCG_COND_* value.
This makes the usage within add2/sub2 clearer.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/s390x: Use ADD LOGICAL WITH SIGNED IMMEDIATE
Richard Henderson [Sun, 19 Jan 2025 18:01:18 +0000 (10:01 -0800)] 
tcg/s390x: Use ADD LOGICAL WITH SIGNED IMMEDIATE

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/s390x: Implement add/sub carry opcodes
Richard Henderson [Sun, 19 Jan 2025 17:31:26 +0000 (09:31 -0800)] 
tcg/s390x: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/s390x: Add TCG_CT_CONST_N32
Richard Henderson [Sat, 18 Jan 2025 22:01:12 +0000 (14:01 -0800)] 
tcg/s390x: Add TCG_CT_CONST_N32

We were using S32 | U32 for add2/sub2.  But the ALGFI and SLGFI
insns that implement this both have uint32_t immediates.
This makes the composite range balanced and
enables use of -0xffffffff ... -0x80000001.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/s390x: Honor carry_live in tcg_out_movi
Richard Henderson [Sat, 18 Jan 2025 21:26:43 +0000 (13:26 -0800)] 
tcg/s390x: Honor carry_live in tcg_out_movi

Do not clobber flags if they're live.  Required in order
to perform register allocation on add/sub carry opcodes.
LA and AGHI are the same size, so use LA unconditionally.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/ppc: Implement add/sub carry opcodes
Richard Henderson [Sat, 18 Jan 2025 00:38:13 +0000 (00:38 +0000)] 
tcg/ppc: Implement add/sub carry opcodes

Tested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/arm: Implement add/sub carry opcodes
Richard Henderson [Wed, 15 Jan 2025 23:35:53 +0000 (23:35 +0000)] 
tcg/arm: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/aarch64: Implement add/sub carry opcodes
Richard Henderson [Wed, 15 Jan 2025 10:41:58 +0000 (02:41 -0800)] 
tcg/aarch64: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/tricore: Use tcg_gen_addcio_i32 for gen_addc_CC
Richard Henderson [Sat, 18 Jan 2025 10:08:55 +0000 (02:08 -0800)] 
target/tricore: Use tcg_gen_addcio_i32 for gen_addc_CC

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/sparc: Use tcg_gen_addcio_tl for gen_op_addcc_int
Richard Henderson [Sat, 18 Jan 2025 10:05:19 +0000 (02:05 -0800)] 
target/sparc: Use tcg_gen_addcio_tl for gen_op_addcc_int

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/sh4: Use tcg_gen_addcio_i32 for addc
Richard Henderson [Sat, 18 Jan 2025 10:03:03 +0000 (02:03 -0800)] 
target/sh4: Use tcg_gen_addcio_i32 for addc

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/s390x: Use tcg_gen_addcio_i64 for op_addc64
Richard Henderson [Sat, 18 Jan 2025 09:59:12 +0000 (01:59 -0800)] 
target/s390x: Use tcg_gen_addcio_i64 for op_addc64

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/ppc: Use tcg_gen_addcio_tl for ADD and SUBF
Richard Henderson [Sat, 18 Jan 2025 09:55:11 +0000 (01:55 -0800)] 
target/ppc: Use tcg_gen_addcio_tl for ADD and SUBF

Tested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/openrisc: Use tcg_gen_addcio_* for ADDC
Richard Henderson [Sat, 18 Jan 2025 09:50:50 +0000 (01:50 -0800)] 
target/openrisc: Use tcg_gen_addcio_* for ADDC

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/microblaze: Use tcg_gen_addcio_i32
Richard Henderson [Sat, 18 Jan 2025 09:47:53 +0000 (01:47 -0800)] 
target/microblaze: Use tcg_gen_addcio_i32

Use this in gen_addc and gen_rsubc, both of which need
add with carry-in and carry-out.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/hppa: Use tcg_gen_addcio_i64
Richard Henderson [Sat, 18 Jan 2025 09:35:49 +0000 (01:35 -0800)] 
target/hppa: Use tcg_gen_addcio_i64

Use this in do_add, do_sub, and do_ds, all of which need
add with carry-in and carry-out.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotarget/arm: Use tcg_gen_addcio_* for ADCS
Richard Henderson [Sat, 18 Jan 2025 09:27:41 +0000 (01:27 -0800)] 
target/arm: Use tcg_gen_addcio_* for ADCS

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Add tcg_gen_addcio_{i32,i64,tl}
Richard Henderson [Sat, 18 Jan 2025 09:19:51 +0000 (01:19 -0800)] 
tcg: Add tcg_gen_addcio_{i32,i64,tl}

Create a function for performing an add with carry-in
and producing carry out.  The carry-out result is boolean.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/i386: Special case addci r, 0, 0
Richard Henderson [Sat, 18 Jan 2025 06:39:14 +0000 (22:39 -0800)] 
tcg/i386: Special case addci r, 0, 0

Using addci with two zeros as input in order to capture the value
of the carry-in bit is common.  Special case this with sbb+neg so
that we do not have to load 0 into a register first.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/i386: Implement add/sub carry opcodes
Richard Henderson [Sat, 18 Jan 2025 06:24:56 +0000 (22:24 -0800)] 
tcg/i386: Implement add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/i386: Honor carry_live in tcg_out_movi
Richard Henderson [Sat, 18 Jan 2025 06:05:48 +0000 (22:05 -0800)] 
tcg/i386: Honor carry_live in tcg_out_movi

Do not clobber flags if they're live.  Required in order
to perform register allocation on add/sub carry opcodes.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Use sub carry opcodes to expand sub2
Richard Henderson [Wed, 15 Jan 2025 02:58:05 +0000 (18:58 -0800)] 
tcg: Use sub carry opcodes to expand sub2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Use add carry opcodes to expand add2
Richard Henderson [Tue, 14 Jan 2025 07:29:42 +0000 (23:29 -0800)] 
tcg: Use add carry opcodes to expand add2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/optimize: With two const operands, prefer 0 in arg1
Richard Henderson [Wed, 15 Jan 2025 07:08:24 +0000 (23:08 -0800)] 
tcg/optimize: With two const operands, prefer 0 in arg1

For most binary operands, two const operands fold.
However, the add/sub carry opcodes have a third input.
Prefer "reg, zero, const" since many risc hosts have a
zero register that can fit a "reg, reg, const" insn format.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/optimize: Handle add/sub with carry opcodes
Richard Henderson [Wed, 15 Jan 2025 02:28:15 +0000 (18:28 -0800)] 
tcg/optimize: Handle add/sub with carry opcodes

Propagate known carry when possible, and simplify the opcodes
to not require carry-in when known.  The result will be cleaned
up further by the subsequent liveness analysis pass.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Add TCGOutOp structures for add/sub carry opcodes
Richard Henderson [Wed, 15 Jan 2025 07:27:53 +0000 (23:27 -0800)] 
tcg: Add TCGOutOp structures for add/sub carry opcodes

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Add add/sub with carry opcodes and infrastructure
Richard Henderson [Tue, 14 Jan 2025 21:58:39 +0000 (13:58 -0800)] 
tcg: Add add/sub with carry opcodes and infrastructure

Liveness needs to track carry-live state in order to
determine if the (hidden) output of the opcode is used.
Code generation needs to track carry-live state in order
to avoid clobbering cpu flags when loading constants.

So far, output routines and backends are unchanged.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Sink def, nb_iargs, nb_oargs loads in liveness_pass_1
Richard Henderson [Tue, 14 Jan 2025 21:12:35 +0000 (13:12 -0800)] 
tcg: Sink def, nb_iargs, nb_oargs loads in liveness_pass_1

Sink the sets of the def, nb_iargs, nb_oargs variables to
the default and do_not_remove labels.  They're not really
needed beforehand, and it avoids preceding code from having
to keep them up-to-date.  Note that def had *not* been kept
up-to-date; thankfully only def->flags had been used and
those bits were constant between opcode changes.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Move i into each for loop in liveness_pass_1
Richard Henderson [Tue, 14 Jan 2025 21:04:15 +0000 (13:04 -0800)] 
tcg: Move i into each for loop in liveness_pass_1

Use per-loop variables instead of one 'i' for the function.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/riscv: Drop support for add2/sub2
Richard Henderson [Tue, 14 Jan 2025 05:24:25 +0000 (21:24 -0800)] 
tcg/riscv: Drop support for add2/sub2

We now produce exactly the same code via generic expansion.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/mips: Drop support for add2/sub2
Richard Henderson [Tue, 14 Jan 2025 05:16:40 +0000 (21:16 -0800)] 
tcg/mips: Drop support for add2/sub2

We now produce exactly the same code via generic expansion.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Do not default add2/sub2_i32 for 32-bit hosts
Richard Henderson [Tue, 14 Jan 2025 05:13:54 +0000 (21:13 -0800)] 
tcg: Do not default add2/sub2_i32 for 32-bit hosts

Require TCG_TARGET_HAS_{add2,sub2}_i32 be defined,
one way or another.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Expand fallback sub2 with 32-bit operations
Richard Henderson [Tue, 14 Jan 2025 04:21:09 +0000 (20:21 -0800)] 
tcg: Expand fallback sub2 with 32-bit operations

No need to expand to i64 to perform the subtract.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Expand fallback add2 with 32-bit operations
Richard Henderson [Tue, 14 Jan 2025 04:14:09 +0000 (20:14 -0800)] 
tcg: Expand fallback add2 with 32-bit operations

No need to expand to i64 to perform the add.
This is smaller on a loongarch64 host, e.g.

bstrpick_d  r28, r27, 31, 0
bstrpick_d  r29, r24, 31, 0
add_d       r28, r28, r29
addi_w      r29, r28, 0
srai_d      r28, r28, 32
  ---
add_w       r28, r27, r24
sltu        r29, r28, r24

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_extract2_{i32,i64}
Richard Henderson [Mon, 13 Jan 2025 05:40:43 +0000 (21:40 -0800)] 
tcg: Merge INDEX_op_extract2_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert extract2 to TCGOutOpExtract2
Richard Henderson [Mon, 13 Jan 2025 05:30:10 +0000 (21:30 -0800)] 
tcg: Convert extract2 to TCGOutOpExtract2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_deposit_{i32,i64}
Richard Henderson [Mon, 13 Jan 2025 04:48:57 +0000 (20:48 -0800)] 
tcg: Merge INDEX_op_deposit_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/aarch64: Improve deposit
Richard Henderson [Mon, 13 Jan 2025 04:42:13 +0000 (20:42 -0800)] 
tcg/aarch64: Improve deposit

Use ANDI for deposit 0 into a register.
Use UBFIZ, aka UBFM, for deposit register into 0.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert deposit to TCGOutOpDeposit
Richard Henderson [Mon, 13 Jan 2025 04:29:41 +0000 (20:29 -0800)] 
tcg: Convert deposit to TCGOutOpDeposit

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert extrh_i64_i32 to TCGOutOpUnary
Richard Henderson [Sun, 12 Jan 2025 21:37:28 +0000 (13:37 -0800)] 
tcg: Convert extrh_i64_i32 to TCGOutOpUnary

At the same time, make extrh_i64_i32 mandatory.  This closes a hole
in which move arguments could be cast between TCGv_i32 and TCGv_i64.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert extrl_i64_i32 to TCGOutOpUnary
Richard Henderson [Sun, 12 Jan 2025 20:57:13 +0000 (12:57 -0800)] 
tcg: Convert extrl_i64_i32 to TCGOutOpUnary

Drop the cast from TCGv_i64 to TCGv_i32 in tcg_gen_extrl_i64_i32
an emit extrl_i64_i32 unconditionally.  Move that special case
to tcg_gen_code when we find out if the output is live or dead.
In this way even hosts that canonicalize truncations can make
use of a store directly from the 64-bit host register.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert extu_i32_i64 to TCGOutOpUnary
Richard Henderson [Sun, 12 Jan 2025 20:34:45 +0000 (12:34 -0800)] 
tcg: Convert extu_i32_i64 to TCGOutOpUnary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert ext_i32_i64 to TCGOutOpUnary
Richard Henderson [Sun, 12 Jan 2025 20:22:45 +0000 (12:22 -0800)] 
tcg: Convert ext_i32_i64 to TCGOutOpUnary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_sextract_{i32,i64}
Richard Henderson [Sun, 12 Jan 2025 19:50:09 +0000 (11:50 -0800)] 
tcg: Merge INDEX_op_sextract_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert sextract to TCGOutOpExtract
Richard Henderson [Sun, 12 Jan 2025 19:44:30 +0000 (11:44 -0800)] 
tcg: Convert sextract to TCGOutOpExtract

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_extract_{i32,i64}
Richard Henderson [Sat, 11 Jan 2025 17:01:46 +0000 (09:01 -0800)] 
tcg: Merge INDEX_op_extract_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert extract to TCGOutOpExtract
Richard Henderson [Sat, 11 Jan 2025 15:55:47 +0000 (07:55 -0800)] 
tcg: Convert extract to TCGOutOpExtract

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Rename INDEX_op_bswap64_i64 to INDEX_op_bswap64
Richard Henderson [Sat, 11 Jan 2025 05:54:44 +0000 (21:54 -0800)] 
tcg: Rename INDEX_op_bswap64_i64 to INDEX_op_bswap64

Even though bswap64 can only be used with TCG_TYPE_I64,
rename the opcode to maintain uniformity.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert bswap64 to TCGOutOpUnary
Richard Henderson [Sat, 11 Jan 2025 05:46:38 +0000 (21:46 -0800)] 
tcg: Convert bswap64 to TCGOutOpUnary

Use TCGOutOpUnary instead of TCGOutOpBswap because the
flags are not used with this opcode; they are merely
present for uniformity with the smaller bswaps.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_bswap32_{i32,i64}
Richard Henderson [Sat, 11 Jan 2025 03:53:51 +0000 (19:53 -0800)] 
tcg: Merge INDEX_op_bswap32_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert bswap32 to TCGOutOpBswap
Richard Henderson [Sat, 11 Jan 2025 03:49:20 +0000 (19:49 -0800)] 
tcg: Convert bswap32 to TCGOutOpBswap

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_bswap16_{i32,i64}
Richard Henderson [Sat, 11 Jan 2025 02:51:16 +0000 (18:51 -0800)] 
tcg: Merge INDEX_op_bswap16_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert bswap16 to TCGOutOpBswap
Richard Henderson [Sat, 11 Jan 2025 02:32:08 +0000 (18:32 -0800)] 
tcg: Convert bswap16 to TCGOutOpBswap

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert setcond2_i32 to TCGOutOpSetcond2
Richard Henderson [Sat, 11 Jan 2025 00:57:07 +0000 (16:57 -0800)] 
tcg: Convert setcond2_i32 to TCGOutOpSetcond2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert brcond2_i32 to TCGOutOpBrcond2
Richard Henderson [Fri, 10 Jan 2025 23:51:26 +0000 (15:51 -0800)] 
tcg: Convert brcond2_i32 to TCGOutOpBrcond2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/ppc: Expand arguments to tcg_out_cmp2
Richard Henderson [Sat, 11 Jan 2025 00:41:26 +0000 (16:41 -0800)] 
tcg/ppc: Expand arguments to tcg_out_cmp2

Tested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/arm: Expand arguments to tcg_out_cmp2
Richard Henderson [Fri, 10 Jan 2025 22:52:41 +0000 (14:52 -0800)] 
tcg/arm: Expand arguments to tcg_out_cmp2

Pass explicit arguments instead of arrays.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/ppc: Drop fallback constant loading in tcg_out_cmp
Richard Henderson [Fri, 10 Jan 2025 21:52:49 +0000 (13:52 -0800)] 
tcg/ppc: Drop fallback constant loading in tcg_out_cmp

Use U and C constraints for brcond2 and setcond2, so that tcg_out_cmp2
automatically passes in-range constants to tcg_out_cmp.

Tested-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Nicholas Piggin <npiggin@gmail.com>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_movcond_{i32,i64}
Richard Henderson [Fri, 10 Jan 2025 21:41:25 +0000 (13:41 -0800)] 
tcg: Merge INDEX_op_movcond_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert movcond to TCGOutOpMovcond
Richard Henderson [Fri, 10 Jan 2025 21:29:39 +0000 (13:29 -0800)] 
tcg: Convert movcond to TCGOutOpMovcond

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_brcond_{i32,i64}
Richard Henderson [Fri, 10 Jan 2025 19:49:22 +0000 (11:49 -0800)] 
tcg: Merge INDEX_op_brcond_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert brcond to TCGOutOpBrcond
Richard Henderson [Fri, 10 Jan 2025 19:40:06 +0000 (11:40 -0800)] 
tcg: Convert brcond to TCGOutOpBrcond

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_{neg}setcond_{i32,i64}`
Richard Henderson [Fri, 10 Jan 2025 17:26:44 +0000 (09:26 -0800)] 
tcg: Merge INDEX_op_{neg}setcond_{i32,i64}`

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert setcond, negsetcond to TCGOutOpSetcond
Richard Henderson [Fri, 10 Jan 2025 17:12:06 +0000 (09:12 -0800)] 
tcg: Convert setcond, negsetcond to TCGOutOpSetcond

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Remove TCG_TARGET_HAS_negsetcond_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 20:48:21 +0000 (12:48 -0800)] 
tcg: Remove TCG_TARGET_HAS_negsetcond_{i32,i64}

All targets now provide negsetcond, so remove the conditional.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/tci: Support negsetcond
Richard Henderson [Thu, 9 Jan 2025 20:42:13 +0000 (12:42 -0800)] 
tcg/tci: Support negsetcond

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/mips: Support negsetcond
Richard Henderson [Thu, 9 Jan 2025 20:36:32 +0000 (12:36 -0800)] 
tcg/mips: Support negsetcond

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg/loongarch64: Support negsetcond
Richard Henderson [Thu, 9 Jan 2025 20:22:55 +0000 (20:22 +0000)] 
tcg/loongarch64: Support negsetcond

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_mulu2_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 17:11:53 +0000 (09:11 -0800)] 
tcg: Merge INDEX_op_mulu2_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert mulu2 to TCGOutOpMul2
Richard Henderson [Thu, 9 Jan 2025 16:59:52 +0000 (08:59 -0800)] 
tcg: Convert mulu2 to TCGOutOpMul2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_muls2_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 15:24:32 +0000 (07:24 -0800)] 
tcg: Merge INDEX_op_muls2_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert muls2 to TCGOutOpMul2
Richard Henderson [Thu, 9 Jan 2025 05:52:03 +0000 (21:52 -0800)] 
tcg: Convert muls2 to TCGOutOpMul2

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_ctpop_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 02:37:43 +0000 (18:37 -0800)] 
tcg: Merge INDEX_op_ctpop_{i32,i64}

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert ctpop to TCGOutOpUnary
Richard Henderson [Thu, 9 Jan 2025 01:56:01 +0000 (17:56 -0800)] 
tcg: Convert ctpop to TCGOutOpUnary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_ctz_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 01:07:01 +0000 (17:07 -0800)] 
tcg: Merge INDEX_op_ctz_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert ctz to TCGOutOpBinary
Richard Henderson [Thu, 9 Jan 2025 01:02:13 +0000 (17:02 -0800)] 
tcg: Convert ctz to TCGOutOpBinary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_clz_{i32,i64}
Richard Henderson [Thu, 9 Jan 2025 00:12:46 +0000 (16:12 -0800)] 
tcg: Merge INDEX_op_clz_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert clz to TCGOutOpBinary
Richard Henderson [Wed, 8 Jan 2025 22:16:04 +0000 (14:16 -0800)] 
tcg: Convert clz to TCGOutOpBinary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_rot{l,r}_{i32,i64}
Richard Henderson [Wed, 8 Jan 2025 18:42:16 +0000 (10:42 -0800)] 
tcg: Merge INDEX_op_rot{l,r}_{i32,i64}

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert rotl, rotr to TCGOutOpBinary
Richard Henderson [Wed, 8 Jan 2025 18:22:53 +0000 (10:22 -0800)] 
tcg: Convert rotl, rotr to TCGOutOpBinary

For aarch64, arm, loongarch64, mips, we can drop rotl.
For ppc, s390x we can drop rotr.
Only x86, riscv, tci have both rotl and rotr.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Do not require both rotr and rotl from the backend
Richard Henderson [Wed, 8 Jan 2025 17:53:38 +0000 (09:53 -0800)] 
tcg: Do not require both rotr and rotl from the backend

Many host architectures do not implement both rotate right
and rotate left and require the compiler to negate the
shift count to rotate the opposite direction.  We have been
requiring the backend to perform this transformation.
Do this during opcode expansion so that the next patch
can drop support where possible in the backend.

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Merge INDEX_op_sar_{i32,i64}
Richard Henderson [Wed, 8 Jan 2025 16:05:18 +0000 (08:05 -0800)] 
tcg: Merge INDEX_op_sar_{i32,i64}

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
6 weeks agotcg: Convert sar to TCGOutOpBinary
Richard Henderson [Wed, 8 Jan 2025 07:36:22 +0000 (23:36 -0800)] 
tcg: Convert sar to TCGOutOpBinary

Reviewed-by: Pierrick Bouvier <pierrick.bouvier@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>