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llvm-project/llvm/test/Transforms/SimplifyCFG/lifetime.ll

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Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
; RUN: opt < %s -simplifycfg -S | FileCheck %s
SimplifyCFG: Avoid miscompilations due to removed lifetime intrinsics. The lifetime intrinsics need some work in order to make it clear which optimizations are or are not valid. For now dropping this optimization avoids a miscompilation. Patch by Björn Steinbrink. llvm-svn: 214336
2014-07-31 05:04:00 +08:00
; Test that a lifetime intrinsic isn't removed because that would change semantics
Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
; CHECK: foo
; CHECK: entry:
SimplifyCFG: Avoid miscompilations due to removed lifetime intrinsics. The lifetime intrinsics need some work in order to make it clear which optimizations are or are not valid. For now dropping this optimization avoids a miscompilation. Patch by Björn Steinbrink. llvm-svn: 214336
2014-07-31 05:04:00 +08:00
; CHECK: bb0:
; CHECK: bb1:
Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
; CHECK: ret
define void @foo(i1 %x) {
entry:
%a = alloca i8
Add address space mangling to lifetime intrinsics In preparation for allowing allocas to have non-0 addrspace. llvm-svn: 299876
2017-04-11 04:18:21 +08:00
call void @llvm.lifetime.start.p0i8(i64 -1, i8* %a) nounwind
Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
br i1 %x, label %bb0, label %bb1
bb0:
Add address space mangling to lifetime intrinsics In preparation for allowing allocas to have non-0 addrspace. llvm-svn: 299876
2017-04-11 04:18:21 +08:00
call void @llvm.lifetime.end.p0i8(i64 -1, i8* %a) nounwind
Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
br label %bb1
bb1:
call void @f()
ret void
}
declare void @f()
Add address space mangling to lifetime intrinsics In preparation for allowing allocas to have non-0 addrspace. llvm-svn: 299876
2017-04-11 04:18:21 +08:00
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) nounwind
Add r134057 back, but splice the predecessor after the successors phi nodes. Original message: Let simplify cfg simplify bb with only debug and lifetime intrinsics. llvm-svn: 134182
2011-07-01 04:14:24 +08:00
Add address space mangling to lifetime intrinsics In preparation for allowing allocas to have non-0 addrspace. llvm-svn: 299876
2017-04-11 04:18:21 +08:00
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) nounwind