llvm/test/CodeGen/X86/vec_shift7.ll
Michael Zolotukhin 6023ad2d37 LegalizeTypes: Handle shift by 0 in ExpandShiftByConstant.
Though such shifts are usually optimized away by combiner, we still can
encounter them after a vector shift is legalized.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231443 91177308-0d34-0410-b5e6-96231b3b80d8
2015-03-06 01:13:01 +00:00

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LLVM

; RUN: llc < %s -march=x86 -mcpu=yonah | FileCheck %s
; Verify that we don't fail when shift by zero is encountered.
define i64 @test1(<2 x i64> %a) {
entry:
%c = shl <2 x i64> %a, <i64 0, i64 2>
%d = extractelement <2 x i64> %c, i32 0
ret i64 %d
}
; CHECK-LABEL: test1