From: Maciej W. Rozycki <macro@embecosm.com>
Date: Wed, 22 Nov 2023 01:18:30 +0000 (+0000)
Subject: RISC-V/testsuite: Add branched cases for generic FP cond adds
X-Git-Tag: basepoints/gcc-15~4402
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2278c6443aa6aaa12b3682afb8ad0774575ae1b4;p=thirdparty%2Fgcc.git

RISC-V/testsuite: Add branched cases for generic FP cond adds

Verify, for generic floating-point conditional-add operations that have
a corresponding conditional-set machine instruction, that if-conversion
does *not* trigger at `-mbranch-cost=2' setting, which makes original
branched code sequences cheaper than their branchless equivalents
if-conversion would emit.  Cover all the relevant floating-point
relational operations to make sure no corner case escapes.

	gcc/testsuite/
	* gcc.target/riscv/adddibfeq.c: New test.
	* gcc.target/riscv/adddibfge.c: New test.
	* gcc.target/riscv/adddibfgt.c: New test.
	* gcc.target/riscv/adddibfle.c: New test.
	* gcc.target/riscv/adddibflt.c: New test.
	* gcc.target/riscv/addsibfeq.c: New test.
	* gcc.target/riscv/addsibfge.c: New test.
	* gcc.target/riscv/addsibfgt.c: New test.
	* gcc.target/riscv/addsibfle.c: New test.
	* gcc.target/riscv/addsibflt.c: New test.
---

diff --git a/gcc/testsuite/gcc.target/riscv/adddibfeq.c b/gcc/testsuite/gcc.target/riscv/adddibfeq.c
new file mode 100644
index 000000000000..403200fd4250
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/adddibfeq.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+adddifeq (double w, double x, int_t y, int_t z)
+{
+  return w == x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	feq.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/adddibfge.c b/gcc/testsuite/gcc.target/riscv/adddibfge.c
new file mode 100644
index 000000000000..82fce9c58b69
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/adddibfge.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+adddifge (double w, double x, int_t y, int_t z)
+{
+  return w >= x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fge.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/adddibfgt.c b/gcc/testsuite/gcc.target/riscv/adddibfgt.c
new file mode 100644
index 000000000000..0263154212d8
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/adddibfgt.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+adddifgt (double w, double x, int_t y, int_t z)
+{
+  return w > x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fgt.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/adddibfle.c b/gcc/testsuite/gcc.target/riscv/adddibfle.c
new file mode 100644
index 000000000000..6fd65f1b4704
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/adddibfle.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+adddifle (double w, double x, int_t y, int_t z)
+{
+  return w <= x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fle.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/adddibflt.c b/gcc/testsuite/gcc.target/riscv/adddibflt.c
new file mode 100644
index 000000000000..bfee522a5cfd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/adddibflt.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target rv64 } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" } */
+
+typedef int __attribute__ ((mode (DI))) int_t;
+
+int_t
+adddiflt (double w, double x, int_t y, int_t z)
+{
+  return w < x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	flt.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/addsibfeq.c b/gcc/testsuite/gcc.target/riscv/addsibfeq.c
new file mode 100644
index 000000000000..27d13a0b4d9f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/addsibfeq.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -fdump-rtl-ce1" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -fdump-rtl-ce1" { target { rv64 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+addsifeq (double w, double x, int_t y, int_t z)
+{
+  return w == x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	feq.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add[w]	a0,a0,a1
+.L2:
+ */
+
+/* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\sfeq\\.d\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/addsibfge.c b/gcc/testsuite/gcc.target/riscv/addsibfge.c
new file mode 100644
index 000000000000..501f7562e66c
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/addsibfge.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv64 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+addsifge (double w, double x, int_t y, int_t z)
+{
+  return w >= x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fge.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add[w]	a0,a0,a1
+.L2:
+ */
+
+/* { /* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/addsibfgt.c b/gcc/testsuite/gcc.target/riscv/addsibfgt.c
new file mode 100644
index 000000000000..fff809b2b1fd
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/addsibfgt.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv64 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+addsifgt (double w, double x, int_t y, int_t z)
+{
+  return w > x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fgt.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	add[w]	a0,a0,a1
+.L2:
+ */
+
+/* { /* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/addsibfle.c b/gcc/testsuite/gcc.target/riscv/addsibfle.c
new file mode 100644
index 000000000000..abcad61c9c47
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/addsibfle.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv64 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+addsifle (double w, double x, int_t y, int_t z)
+{
+  return w <= x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	fle.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	addw	a0,a0,a1
+.L2:
+ */
+
+/* { /* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */
diff --git a/gcc/testsuite/gcc.target/riscv/addsibflt.c b/gcc/testsuite/gcc.target/riscv/addsibflt.c
new file mode 100644
index 000000000000..2a82c289e64f
--- /dev/null
+++ b/gcc/testsuite/gcc.target/riscv/addsibflt.c
@@ -0,0 +1,26 @@
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-O0" "-Og" "-Os" "-Oz" } } */
+/* { dg-options "-march=rv32gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv32 } } } */
+/* { dg-options "-march=rv64gc -mtune=sifive-5-series -mbranch-cost=2 -mmovcc -ffinite-math-only -fdump-rtl-ce1" { target { rv64 } } } */
+
+typedef int __attribute__ ((mode (SI))) int_t;
+
+int_t
+addsiflt (double w, double x, int_t y, int_t z)
+{
+  return w < x ? y + z : y;
+}
+
+/* Expect branched assembly like:
+
+	flt.d	a5,fa0,fa1
+	beq	a5,zero,.L2
+	addw	a0,a0,a1
+.L2:
+ */
+
+/* { /* { dg-final { scan-rtl-dump-not "Conversion succeeded on pass \[0-9\]+\\." "ce1" } } */
+/* { dg-final { scan-rtl-dump-not "if-conversion succeeded through" "ce1" } } */
+/* { dg-final { scan-assembler-times "\\s(?:fge\\.d|fgt\\.d|fle\\.d|flt\\.d)\\s" 1 } } */
+/* { dg-final { scan-assembler-times "\\s(?:beq|bne)\\s" 1 } } */
+/* { dg-final { scan-assembler-not "\\s(?:seqz|snez)\\s" } } */