llvm/test/Transforms/InstCombine/2008-07-08-ShiftOneAndOne.ll
Nick Lewycky d1f77bf931 Fold ((1 << a) & 1) to (a == 0).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@53276 91177308-0d34-0410-b5e6-96231b3b80d8
2008-07-09 05:20:13 +00:00

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288 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {icmp ne i32 \%a}
; PR2330
define i1 @foo(i32 %a) nounwind {
entry:
%tmp15 = shl i32 1, %a ; <i32> [#uses=1]
%tmp237 = and i32 %tmp15, 1 ; <i32> [#uses=1]
%toBool = icmp eq i32 %tmp237, 0 ; <i1> [#uses=1]
ret i1 %toBool
}