llvm-6502/test/Transforms/Reassociate/shifttest.ll

13 lines
316 B
LLVM
Raw Normal View History

; With shl->mul reassociation, we can see that this is (shl A, 9) * A
;
; RUN: opt < %s -reassociate -instcombine -S |\
; RUN: grep "shl .*, 9"
define i32 @test(i32 %A, i32 %B) {
%X = shl i32 %A, 5 ; <i32> [#uses=1]
%Y = shl i32 %A, 4 ; <i32> [#uses=1]
%Z = mul i32 %Y, %X ; <i32> [#uses=1]
ret i32 %Z
}