llvm-project/llvm/test/Transforms/InstCombine/add-shrink.ll

15 lines
462 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {add i32}
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep sext | count 1
; Should only have one sext and the add should be i32 instead of i64.
define i64 @test1(i32 %A) {
%B = ashr i32 %A, 7 ; <i32> [#uses=1]
%C = ashr i32 %A, 9 ; <i32> [#uses=1]
%D = sext i32 %B to i64 ; <i64> [#uses=1]
%E = sext i32 %C to i64 ; <i64> [#uses=1]
%F = add i64 %D, %E ; <i64> [#uses=1]
ret i64 %F
}