diff options
Diffstat (limited to 'test/CodeGen/X86/dagcombine_unsafe_math.ll')
| -rw-r--r-- | test/CodeGen/X86/dagcombine_unsafe_math.ll | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/test/CodeGen/X86/dagcombine_unsafe_math.ll b/test/CodeGen/X86/dagcombine_unsafe_math.ll index a3221dea5b..592cf1bec2 100644 --- a/test/CodeGen/X86/dagcombine_unsafe_math.ll +++ b/test/CodeGen/X86/dagcombine_unsafe_math.ll @@ -40,3 +40,17 @@ define float @test4(float %x, float %y) { ; CHECK: test4 ; CHECK: vaddss } + +; rdar://13445387 +; "x + x + x => 3.0 * x" should be disabled after legalization because +; Instruction-Selection dosen't know how to handle "3.0" +; +define float @test5() { + %mul.i.i151 = fmul <4 x float> zeroinitializer, zeroinitializer + %vecext.i8.i152 = extractelement <4 x float> %mul.i.i151, i32 1 + %vecext1.i9.i153 = extractelement <4 x float> %mul.i.i151, i32 0 + %add.i10.i154 = fadd float %vecext1.i9.i153, %vecext.i8.i152 + %vecext.i7.i155 = extractelement <4 x float> %mul.i.i151, i32 2 + %add.i.i156 = fadd float %vecext.i7.i155, %add.i10.i154 + ret float %add.i.i156 +} |