* i386.c (x86_promote_QImode): Set for Athlon

	(x86_fast_prefix): New global variable.
	(x86_arch_always_fancy_math_387): Fix formating.
	* i386.h (x86_fast_prefix): Declare
	(TARGET_FAST_PREFIX): define.
	* i386.md (and to strict_low_part, HI to SI
	promoting splitter): Use new macro.

	* i386.h (RTX_COSTS): float_extend is not for free for SSE.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@54521 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index e5c647985e37ad6bd5fd58a205946313f813ce33..8c89cdc473c25bbae06bf70425a44b947efe8bf1 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,15 @@
+Tue Jun 11 21:53:37 CEST 2002  Jan Hubicka  <jh@suse.cz>
+
+       * i386.c (x86_promote_QImode): Set for Athlon
+       (x86_fast_prefix): New global variable.
+       (x86_arch_always_fancy_math_387): Fix formating.
+       * i386.h (x86_fast_prefix): Declare
+       (TARGET_FAST_PREFIX): define.
+       * i386.md (and to strict_low_part, HI to SI
+       promoting splitter): Use new macro.
+
+       * i386.h (RTX_COSTS): float_extend is not for free for SSE.
+
 2002-06-11  Zack Weinberg  <zack@codesourcery.com>
 
        * Makefile.in (distclean): Delete junk left in testsuite

diff --git a/gcc/config/i386/i386.c b/gcc/config/i386/i386.c
index 9ece4eb24022537d8aaac8992daa2139174fac76..93e1a65a6fe712bca27a7250bf4721fb6c49e435 100644 (file)
--- a/gcc/config/i386/i386.c
+++ b/gcc/config/i386/i386.c
@@ -376,7 +376,8 @@ const int x86_use_cltd = ~(m_PENT | m_K6);
 const int x86_read_modify_write = ~m_PENT;
 const int x86_read_modify = ~(m_PENT | m_PPRO);
 const int x86_split_long_moves = m_PPRO;
-const int x86_promote_QImode = m_K6 | m_PENT | m_386 | m_486;
+const int x86_promote_QImode = m_K6 | m_PENT | m_386 | m_486 | m_ATHLON;
+const int x86_fast_prefix = ~(m_PENT | m_486 | m_386);
 const int x86_single_stringop = m_386 | m_PENT4;
 const int x86_qimode_math = ~(0);
 const int x86_promote_qi_regs = 0;
@@ -393,7 +394,7 @@ const int x86_accumulate_outgoing_args = m_ATHLON | m_PENT4 | m_PPRO;
 const int x86_prologue_using_move = m_ATHLON | m_PENT4 | m_PPRO;
 const int x86_epilogue_using_move = m_ATHLON | m_PENT4 | m_PPRO;
 const int x86_decompose_lea = m_PENT4;
-const int x86_arch_always_fancy_math_387 = m_PENT|m_PPRO|m_ATHLON|m_PENT4;
+const int x86_arch_always_fancy_math_387 = m_PENT | m_PPRO | m_ATHLON | m_PENT4;
 
 /* In case the avreage insn count for single function invocation is
    lower than this constant, emit fast (but longer) prologue and

diff --git a/gcc/config/i386/i386.h b/gcc/config/i386/i386.h
index 958ef58aa04c42130a347e1e958f4feb58917e62..11b663c164531a5cf983071ceb35589cae1c6fef 100644 (file)
--- a/gcc/config/i386/i386.h
+++ b/gcc/config/i386/i386.h
@@ -201,7 +201,7 @@ extern const int x86_double_with_add, x86_partial_reg_stall, x86_movx;
 extern const int x86_use_loop, x86_use_fiop, x86_use_mov0;
 extern const int x86_use_cltd, x86_read_modify_write;
 extern const int x86_read_modify, x86_split_long_moves;
-extern const int x86_promote_QImode, x86_single_stringop;
+extern const int x86_promote_QImode, x86_single_stringop, x86_fast_prefix;
 extern const int x86_himode_math, x86_qimode_math, x86_promote_qi_regs;
 extern const int x86_promote_hi_regs, x86_integer_DFmode_moves;
 extern const int x86_add_esp_4, x86_add_esp_8, x86_sub_esp_4, x86_sub_esp_8;
@@ -233,6 +233,7 @@ extern int x86_prefetch_sse;
 #define TARGET_READ_MODIFY_WRITE (x86_read_modify_write & CPUMASK)
 #define TARGET_READ_MODIFY (x86_read_modify & CPUMASK)
 #define TARGET_PROMOTE_QImode (x86_promote_QImode & CPUMASK)
+#define TARGET_FAST_PREFIX (x86_fast_prefix & CPUMASK)
 #define TARGET_SINGLE_STRINGOP (x86_single_stringop & CPUMASK)
 #define TARGET_QIMODE_MATH (x86_qimode_math & CPUMASK)
 #define TARGET_HIMODE_MATH (x86_himode_math & CPUMASK)
@@ -2698,7 +2699,10 @@ do {                                                     \
     TOPLEVEL_COSTS_N_INSNS (ix86_cost->add);                           \
                                                                        \
   case FLOAT_EXTEND:                                                   \
-    TOPLEVEL_COSTS_N_INSNS (0);                                                \
+    if (!TARGET_SSE_MATH                                               \
+       || !VALID_SSE_REG_MODE (GET_MODE (X)))                          \
+      TOPLEVEL_COSTS_N_INSNS (0);                                      \
+    break;                                                             \
                                                                        \
   egress_rtx_costs:                                                    \
     break;

diff --git a/gcc/config/i386/i386.md b/gcc/config/i386/i386.md
index 10c31295fd39039ddf812349da9d891b89a82dca..fd2cb47f601007a410626b6f13cf3cafb0eba42f 100644 (file)
--- a/gcc/config/i386/i386.md
+++ b/gcc/config/i386/i386.md
@@ -7881,7 +7881,7 @@
        (and (match_dup 0)
             (const_int -65536)))
    (clobber (reg:CC 17))]
-  "optimize_size"
+  "optimize_size || (TARGET_FAST_PREFIX && !TARGET_PARTIAL_REG_STALL)"
   [(set (strict_low_part (match_dup 1)) (const_int 0))]
   "operands[1] = gen_lowpart (HImode, operands[0]);")
 
@@ -16334,7 +16334,8 @@
    (clobber (reg:CC 17))]
   "! TARGET_PARTIAL_REG_STALL && reload_completed
    && ((GET_MODE (operands[0]) == HImode 
-       && (!optimize_size || GET_CODE (operands[2]) != CONST_INT
+       && ((!optimize_size && !TARGET_FAST_PREFIX)
+           || GET_CODE (operands[2]) != CONST_INT
            || CONST_OK_FOR_LETTER_P (INTVAL (operands[2]), 'K')))
        || (GET_MODE (operands[0]) == QImode 
           && (TARGET_PROMOTE_QImode || optimize_size)))"

diff --git a/gcc/gcse.c b/gcc/gcse.c
index 28b7264751ae34bce9e994c1552df03d0dad73df..d390db3f528e7a0927333dd76c5870bfc8a5304f 100644 (file)
--- a/gcc/gcse.c
+++ b/gcc/gcse.c
@@ -5153,6 +5153,11 @@ gcse_emit_move_after (src, dest, insn)
 
   new = emit_insn_after (gen_rtx_SET (VOIDmode, dest, src), insn);
 
+  /* want_to_gcse_p verifies that this move will be valid.  Still this call
+     is mandatory as it may create clobbers required by the pattern.  */
+  if (insn_invalid_p (insn))
+    abort ();
+
   /* Note the equivalence for local CSE pass.  */
   if ((note = find_reg_equal_equiv_note (insn)))
     eqv = XEXP (note, 0);