diff mbox

[gomp4] backport the new sincos pattern

Message ID 574313C4.80404@codesourcery.com
State New
Headers show

Commit Message

Cesar Philippidis May 23, 2016, 2:29 p.m. UTC 
I've committed this patch to backport the new sincos pattern, which is
enabled with -ffast-math, to gomp-4_0-branch.

Cesar
diff mbox

Patch

2016-05-23  Cesar Philippidis  <cesar@codesourcery.com>

	gcc/
	* config/nvptx/nvptx.md (sincossf3): New pattern.

	gcc/testsuite/
	* gcc.target/nvptx/sincos.c: New test.


diff --git a/gcc/config/nvptx/nvptx.md b/gcc/config/nvptx/nvptx.md
index 33a4862..e48412d 100644
--- a/gcc/config/nvptx/nvptx.md
+++ b/gcc/config/nvptx/nvptx.md
@@ -794,6 +794,17 @@ 
   ""
   "%.\\tsqrt%#%t0\\t%0, %1;")
 
+(define_expand "sincossf3"
+  [(set (match_operand:SF 0 "nvptx_register_operand" "=R")
+	(unspec:SF [(match_operand:SF 2 "nvptx_register_operand" "R")]
+	           UNSPEC_COS))
+   (set (match_operand:SF 1 "nvptx_register_operand" "=R")
+	(unspec:SF [(match_dup 2)] UNSPEC_SIN))]
+  "flag_unsafe_math_optimizations"
+{
+  operands[2] = make_safe_from (operands[2], operands[0]);
+})
+
 (define_insn "sinsf2"
   [(set (match_operand:SF 0 "nvptx_register_operand" "=R")
 	(unspec:SF [(match_operand:SF 1 "nvptx_register_operand" "R")]
diff --git a/gcc/testsuite/gcc.target/nvptx/sincos.c b/gcc/testsuite/gcc.target/nvptx/sincos.c
new file mode 100644
index 0000000..921ec41
--- /dev/null
+++ b/gcc/testsuite/gcc.target/nvptx/sincos.c
@@ -0,0 +1,17 @@ 
+/* { dg-do compile } */
+/* { dg-options "-O2 -ffast-math" } */
+
+extern float sinf (float);
+extern float cosf (float);
+
+float
+sincos_add (float x)
+{
+  float s = sinf (x);
+  float c = cosf (x);
+
+  return s + c;
+}
+
+/* { dg-final { scan-assembler-times "sin.approx.f32" 1 } } */
+/* { dg-final { scan-assembler-times "cos.approx.f32" 1 } } */