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llvm-mirror/test/Transforms/Mem2Reg/ignore-lifetime.ll
Eric Christopher a62270de2c Revert "Temporarily Revert "Add basic loop fusion pass.""
The reversion apparently deleted the test/Transforms directory.

Will be re-reverting again.

llvm-svn: 358552
2019-04-17 04:52:47 +00:00

27 lines
743 B
LLVM

; RUN: opt -mem2reg -S -o - < %s | FileCheck %s
declare void @llvm.lifetime.start.p0i8(i64 %size, i8* nocapture %ptr)
declare void @llvm.lifetime.end.p0i8(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.p0i8(i64 2, i8* %B)
store i32 1, i32* %A
call void @llvm.lifetime.end.p0i8(i64 2, i8* %B)
ret void
}
define void @test2() {
; CHECK: test2
; CHECK-NOT: alloca
%A = alloca {i8, i16}
%B = getelementptr {i8, i16}, {i8, i16}* %A, i32 0, i32 0
call void @llvm.lifetime.start.p0i8(i64 2, i8* %B)
store {i8, i16} zeroinitializer, {i8, i16}* %A
call void @llvm.lifetime.end.p0i8(i64 2, i8* %B)
ret void
}