; RUN: opt < %s -passes=instcombine -S | not grep 34 | |
define i32 @test(i32 %X) { | |
; Do not fold into shr X, 34, as this uses undefined behavior! | |
%Y = ashr i32 %X, 17 ; <i32> [#uses=1] | |
%Z = ashr i32 %Y, 17 ; <i32> [#uses=1] | |
ret i32 %Z | |
} | |
define i32 @test2(i32 %X) { | |
; Do not fold into shl X, 34, as this uses undefined behavior! | |
%Y = shl i32 %X, 17 ; <i32> [#uses=1] | |
%Z = shl i32 %Y, 17 ; <i32> [#uses=1] | |
ret i32 %Z | |
} |