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| author | Stephen Hines <srhines@google.com> | 2014-12-01 14:51:49 -0800 |
|---|---|---|
| committer | Stephen Hines <srhines@google.com> | 2014-12-02 16:08:10 -0800 |
| commit | 37ed9c199ca639565f6ce88105f9e39e898d82d0 (patch) | |
| tree | 8fb36d3910e3ee4c4e1b7422f4f017108efc52f5 /test/CodeGen/X86/vec_unsafe-fp-math.ll | |
| parent | d2327b22152ced7bc46dc629fc908959e8a52d03 (diff) | |
| download | external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.tar.gz external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.tar.bz2 external_llvm-37ed9c199ca639565f6ce88105f9e39e898d82d0.zip | |
Update aosp/master LLVM for rebase to r222494.
Change-Id: Ic787f5e0124df789bd26f3f24680f45e678eef2d
Diffstat (limited to 'test/CodeGen/X86/vec_unsafe-fp-math.ll')
| -rw-r--r-- | test/CodeGen/X86/vec_unsafe-fp-math.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/vec_unsafe-fp-math.ll b/test/CodeGen/X86/vec_unsafe-fp-math.ll new file mode 100644 index 0000000000..827d4184d1 --- /dev/null +++ b/test/CodeGen/X86/vec_unsafe-fp-math.ll @@ -0,0 +1,23 @@ +; RUN: llc < %s -enable-unsafe-fp-math -mtriple=x86_64-unknown-unknown -mcpu=corei7 | FileCheck %s + +; Make sure that vectors get the same benefits as scalars when using unsafe-fp-math. + +; Subtracting zero is free. +define <4 x float> @vec_fsub_zero(<4 x float> %x) { +; CHECK-LABEL: vec_fsub_zero: +; CHECK-NOT: subps +; CHECK-NOT: xorps +; CHECK: retq + %sub = fsub <4 x float> %x, zeroinitializer + ret <4 x float> %sub +} + +; Negating doesn't require subtraction. +define <4 x float> @vec_fneg(<4 x float> %x) { +; CHECK-LABEL: vec_fneg: +; CHECK: xorps {{.*}}LCP{{.*}}, %xmm0 +; CHECK-NOT: subps +; CHECK-NEXT: retq + %sub = fsub <4 x float> zeroinitializer, %x + ret <4 x float> %sub +} |