llvm-6502/test/Transforms/Mem2Reg/ignore-lifetime.ll
2013-08-13 22:55:05 +00:00

27 lines
702 B
LLVM

; RUN: opt -mem2reg -S -o - < %s | FileCheck %s
declare void @llvm.lifetime.start(i64 %size, i8* nocapture %ptr)
declare void @llvm.lifetime.end(i64 %size, i8* nocapture %ptr)
define void @test1() {
; CHECK: test1
; CHECK-NOT: alloca
%A = alloca i32
%B = bitcast i32* %A to i8*
call void @llvm.lifetime.start(i64 2, i8* %B)
store i32 1, i32* %A
call void @llvm.lifetime.end(i64 2, i8* %B)
ret void
}
define void @test2() {
; CHECK: test2
; CHECK-NOT: alloca
%A = alloca {i8, i16}
%B = getelementptr {i8, i16}* %A, i32 0, i32 0
call void @llvm.lifetime.start(i64 2, i8* %B)
store {i8, i16} zeroinitializer, {i8, i16}* %A
call void @llvm.lifetime.end(i64 2, i8* %B)
ret void
}