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| author | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:33 +0000 |
|---|---|---|
| committer | Benjamin Kramer <benny.kra@googlemail.com> | 2013-02-04 15:19:33 +0000 |
| commit | a220aeb58f30a6b3fc991883e8107d5e1198c53b (patch) | |
| tree | c8a3fea7ba6af0b3f32fc4651a64edb3d12d57c7 /test/CodeGen/X86/avx-shift.ll | |
| parent | 9fa9251bbad191feb52273b0f3d44531a5fd78a0 (diff) | |
X86: Open up some opportunities for constant folding by postponing shift lowering.
Fixes PR15141.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@174327 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/CodeGen/X86/avx-shift.ll')
| -rw-r--r-- | test/CodeGen/X86/avx-shift.ll | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/test/CodeGen/X86/avx-shift.ll b/test/CodeGen/X86/avx-shift.ll index 681747b844..b0bff454c1 100644 --- a/test/CodeGen/X86/avx-shift.ll +++ b/test/CodeGen/X86/avx-shift.ll @@ -112,6 +112,16 @@ define <8 x i32> @vshift08(<8 x i32> %a) nounwind { ret <8 x i32> %bitop } +; PR15141 +; CHECK: _vshift13: +; CHECK-NOT: vpsll +; CHECK: vcvttps2dq +; CHECK-NEXT: vpmulld +define <4 x i32> @vshift13(<4 x i32> %in) { + %T = shl <4 x i32> %in, <i32 0, i32 1, i32 2, i32 4> + ret <4 x i32> %T +} + ;;; Uses shifts for sign extension ; CHECK: _sext_v16i16 ; CHECK: vpsllw |