blob: 1f781a4ce195d728e57da2a4811ee9629dee5cf6 [file] [log] [blame]
; RUN: opt -S -rewrite-statepoints-for-gc < %s | FileCheck %s
; RUN: opt -S -passes=rewrite-statepoints-for-gc < %s | FileCheck %s
; Regression test:
; After the rewritable callsite collection if any callsite was found
; in a block that was reported unreachable by DominanceTree then
; removeUnreachableBlocks() was called. But it is stronger than
; DominatorTree::isReachableFromEntry(), i.e. removeUnreachableBlocks
; can remove some blocks for which isReachableFromEntry() returns true.
; This resulted in stale pointers to the collected but removed
; callsites. Such stale pointers caused crash when accessed.
declare void @f(i8 addrspace(1)* %obj)
define void @test(i8 addrspace(1)* %arg) gc "statepoint-example" {
; CHECK-LABEL: test(
call void @f(i8 addrspace(1)* %arg) #1
br i1 true, label %not_zero, label %zero
ret void
; This block is reachable but removed by removeUnreachableBlocks()
call void @f(i8 addrspace(1)* %arg) #1
ret void
call void @f(i8 addrspace(1)* %arg) #1
ret void
attributes #1 = { norecurse noimplicitfloat }