PTX: add flag to disable mad/fma selection

Patch by Dan Bailey

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131537 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 16 insertions, 0 deletions

diff --git a/test/CodeGen/PTX/mad-disabling.ll b/test/CodeGen/PTX/mad-disabling.ll
new file mode 100644
index 0000000000..ad7b3417ec
--- /dev/null
+++ b/test/CodeGen/PTX/mad-disabling.ll
@@ -0,0 +1,16 @@
+; RUN: llc < %s -march=ptx32 -mattr=+ptx20,+sm20 | grep "mad"
+; RUN: llc < %s -march=ptx32 -mattr=+ptx20,+sm20,+no-fma | grep -v "mad"
+
+define ptx_device float @test_mul_add_f(float %x, float %y, float %z) {
+entry:
+  %a = fmul float %x, %y
+  %b = fadd float %a, %z
+  ret float %b
+}
+
+define ptx_device double @test_mul_add_d(double %x, double %y, double %z) {
+entry:
+  %a = fmul double %x, %y
+  %b = fadd double %a, %z
+  ret double %b
+}