diff options
| author | Owen Anderson <resistor@mac.com> | 2012-09-01 06:04:27 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2012-09-01 06:04:27 +0000 |
| commit | 58d5729540bec7c6f7aef19a9a6a179123deab47 (patch) | |
| tree | 5e98189be6f79ea0c87a8398860fa0438fd63495 /test | |
| parent | b79bff50bdf68615dfa1ddd2239c8d093e155e1f (diff) | |
Teach DAG combine a number of tricks to simplify FMA expressions in fast-math mode.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@163051 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/ARM/fp-fast.ll | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/test/CodeGen/ARM/fp-fast.ll b/test/CodeGen/ARM/fp-fast.ll new file mode 100644 index 0000000000..ec57187381 --- /dev/null +++ b/test/CodeGen/ARM/fp-fast.ll @@ -0,0 +1,60 @@ +; RUN: llc -march=arm -mcpu=cortex-a9 -mattr=+vfp4 -enable-unsafe-fp-math < %s | FileCheck %s + +; CHECK: test1 +define float @test1(float %x) { +; CHECK-NOT: vfma +; CHECK: vmul.f32 +; CHECK-NOT: vfma + %t1 = fmul float %x, 3.0 + %t2 = call float @llvm.fma.f32(float %x, float 2.0, float %t1) + ret float %t2 +} + +; CHECK: test2 +define float @test2(float %x, float %y) { +; CHECK-NOT: vmul +; CHECK: vfma.f32 +; CHECK-NOT: vmul + %t1 = fmul float %x, 3.0 + %t2 = call float @llvm.fma.f32(float %t1, float 2.0, float %y) + ret float %t2 +} + +; CHECK: test3 +define float @test3(float %x, float %y) { +; CHECK-NOT: vfma +; CHECK: vadd.f32 +; CHECK-NOT: vfma + %t2 = call float @llvm.fma.f32(float %x, float 1.0, float %y) + ret float %t2 +} + +; CHECK: test4 +define float @test4(float %x, float %y) { +; CHECK-NOT: vfma +; CHECK: vsub.f32 +; CHECK-NOT: vfma + %t2 = call float @llvm.fma.f32(float %x, float -1.0, float %y) + ret float %t2 +} + +; CHECK: test5 +define float @test5(float %x) { +; CHECK-NOT: vfma +; CHECK: vmul.f32 +; CHECK-NOT: vfma + %t2 = call float @llvm.fma.f32(float %x, float 2.0, float %x) + ret float %t2 +} + +; CHECK: test6 +define float @test6(float %x) { +; CHECK-NOT: vfma +; CHECK: vmul.f32 +; CHECK-NOT: vfma + %t1 = fsub float -0.0, %x + %t2 = call float @llvm.fma.f32(float %x, float 5.0, float %t1) + ret float %t2 +} + +declare float @llvm.fma.f32(float, float, float) |