llvm-project/llvm/test/Transforms/InstCombine/2008-01-21-MulTrunc.ll

12 lines
467 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | notcast
define i16 @test1(i16 %a) {
%tmp = zext i16 %a to i32 ; <i32> [#uses=2]
%tmp21 = lshr i32 %tmp, 8 ; <i32> [#uses=1]
%tmp5 = mul i32 %tmp, 5 ; <i32> [#uses=1]
%tmp.upgrd.32 = or i32 %tmp21, %tmp5 ; <i32> [#uses=1]
%tmp.upgrd.3 = trunc i32 %tmp.upgrd.32 to i16 ; <i16> [#uses=1]
ret i16 %tmp.upgrd.3
}