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| author | Owen Anderson <resistor@mac.com> | 2012-11-01 02:00:53 +0000 |
|---|---|---|
| committer | Owen Anderson <resistor@mac.com> | 2012-11-01 02:00:53 +0000 |
| commit | 607ebde651f18d68e45724c6e3b3544d4786879f (patch) | |
| tree | 7ab6e55edc0f913be008ea829f7507b2fe8aacf6 /test | |
| parent | 21caa9ef03e3f2d4e860c8fc3cd53015c42934bf (diff) | |
| download | llvm-607ebde651f18d68e45724c6e3b3544d4786879f.tar.gz llvm-607ebde651f18d68e45724c6e3b3544d4786879f.tar.bz2 llvm-607ebde651f18d68e45724c6e3b3544d4786879f.tar.xz | |
Add a few more simple fast-math constant propagations and cancellations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@167200 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test')
| -rw-r--r-- | test/CodeGen/X86/fp-fast.ll | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fp-fast.ll b/test/CodeGen/X86/fp-fast.ll index 091f0de930..192a127358 100644 --- a/test/CodeGen/X86/fp-fast.ll +++ b/test/CodeGen/X86/fp-fast.ll @@ -35,3 +35,23 @@ define float @test3(float %a) { ret float %r } +; CHECK: test4 +define float @test4(float %a) { +; CHECK-NOT: fma +; CHECK-NOT mul +; CHECK-NOT: add +; CHECK: ret + %t1 = fmul float %a, 0.0 + %t2 = fadd float %a, %t1 + ret float %t2 +} + +; CHECK: test5 +define float @test5(float %a) { +; CHECK-NOT: add +; CHECK: vxorps +; CHECK: ret + %t1 = fsub float -0.0, %a + %t2 = fadd float %a, %t1 + ret float %t2 +} |