llvm-project/llvm/test/Transforms/FunctionSpecialization/bug52821-use-after-free.ll

59 lines
1.9 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -function-specialization -S < %s | FileCheck %s
%mystruct = type { i32, [2 x i64] }
define internal ptr @myfunc(ptr %arg) {
; CHECK-LABEL: @myfunc(
; CHECK-NEXT: entry:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: br i1 true, label [[FOR_COND2:%.*]], label [[FOR_BODY:%.*]]
; CHECK: for.body:
; CHECK-NEXT: call void @callee(ptr nonnull null)
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.cond2:
; CHECK-NEXT: br i1 false, label [[FOR_END:%.*]], label [[FOR_BODY2:%.*]]
; CHECK: for.body2:
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [[MYSTRUCT:%.*]], ptr null, i64 0, i32 1, i64 3
; CHECK-NEXT: br label [[FOR_COND2]]
; CHECK: for.end:
; CHECK-NEXT: ret ptr [[ARG:%.*]]
;
entry:
br label %for.cond
for.cond: ; preds = %for.body, %entry
%phi = phi ptr [ undef, %for.body ], [ null, %entry ]
%cond = icmp eq ptr %phi, null
br i1 %cond, label %for.cond2, label %for.body
for.body: ; preds = %for.cond
call void @callee(ptr nonnull %phi)
br label %for.cond
for.cond2: ; preds = %for.body2, %for.cond
%phi2 = phi ptr [ undef, %for.body2 ], [ null, %for.cond ]
br i1 false, label %for.end, label %for.body2
for.body2: ; preds = %for.cond2
%arrayidx = getelementptr inbounds %mystruct, ptr %phi2, i64 0, i32 1, i64 3
br label %for.cond2
for.end: ; preds = %for.cond2
ret ptr %arg
}
define ptr @caller() {
; CHECK-LABEL: @caller(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[CALL:%.*]] = call ptr @myfunc(ptr undef)
; CHECK-NEXT: ret ptr [[CALL]]
;
entry:
%call = call ptr @myfunc(ptr undef)
ret ptr %call
}
declare void @callee(ptr)