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llvm-project/llvm/test/Transforms/StackProtector/X86/captures.ll

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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -mtriple=x86_64-pc-linux-gnu -stack-protector < %s | FileCheck %s
; Bug 42238: Test some situations missed by old, custom capture tracking.
define void @store_captures() #0 {
; CHECK-LABEL: @store_captures(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[STACKGUARDSLOT:%.*]] = alloca i8*
; CHECK-NEXT: [[STACKGUARD:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: call void @llvm.stackprotector(i8* [[STACKGUARD]], i8** [[STACKGUARDSLOT]])
; CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[J:%.*]] = alloca i32*, align 8
; CHECK-NEXT: store i32 0, i32* [[RETVAL]]
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[A]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD]], 1
; CHECK-NEXT: store i32 [[ADD]], i32* [[A]], align 4
; CHECK-NEXT: store i32* [[A]], i32** [[J]], align 8
; CHECK-NEXT: [[STACKGUARD1:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: [[TMP0:%.*]] = load volatile i8*, i8** [[STACKGUARDSLOT]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8* [[STACKGUARD1]], [[TMP0]]
; CHECK-NEXT: br i1 [[TMP1]], label [[SP_RETURN:%.*]], label [[CALLSTACKCHECKFAILBLK:%.*]], !prof !0
; CHECK: SP_return:
; CHECK-NEXT: ret void
; CHECK: CallStackCheckFailBlk:
; CHECK-NEXT: call void @__stack_chk_fail()
; CHECK-NEXT: unreachable
;
entry:
%retval = alloca i32, align 4
%a = alloca i32, align 4
%j = alloca i32*, align 8
store i32 0, i32* %retval
%load = load i32, i32* %a, align 4
%add = add nsw i32 %load, 1
store i32 %add, i32* %a, align 4
store i32* %a, i32** %j, align 8
ret void
}
define i32* @return_captures() #0 {
; CHECK-LABEL: @return_captures(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[J:%.*]] = alloca i32*, align 8
; CHECK-NEXT: store i32 0, i32* [[RETVAL]]
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[A]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD]], 1
; CHECK-NEXT: store i32 [[ADD]], i32* [[A]], align 4
; CHECK-NEXT: ret i32* [[A]]
;
entry:
%retval = alloca i32, align 4
%a = alloca i32, align 4
%j = alloca i32*, align 8
store i32 0, i32* %retval
%load = load i32, i32* %a, align 4
%add = add nsw i32 %load, 1
store i32 %add, i32* %a, align 4
ret i32* %a
}
define void @store_addrspacecast_captures() #0 {
; CHECK-LABEL: @store_addrspacecast_captures(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[STACKGUARDSLOT:%.*]] = alloca i8*
; CHECK-NEXT: [[STACKGUARD:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: call void @llvm.stackprotector(i8* [[STACKGUARD]], i8** [[STACKGUARDSLOT]])
; CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[J:%.*]] = alloca i32 addrspace(1)*, align 8
; CHECK-NEXT: store i32 0, i32* [[RETVAL]]
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[A]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD]], 1
; CHECK-NEXT: store i32 [[ADD]], i32* [[A]], align 4
; CHECK-NEXT: [[A_ADDRSPACECAST:%.*]] = addrspacecast i32* [[A]] to i32 addrspace(1)*
; CHECK-NEXT: store i32 addrspace(1)* [[A_ADDRSPACECAST]], i32 addrspace(1)** [[J]], align 8
; CHECK-NEXT: [[STACKGUARD1:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: [[TMP0:%.*]] = load volatile i8*, i8** [[STACKGUARDSLOT]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp eq i8* [[STACKGUARD1]], [[TMP0]]
; CHECK-NEXT: br i1 [[TMP1]], label [[SP_RETURN:%.*]], label [[CALLSTACKCHECKFAILBLK:%.*]], !prof !0
; CHECK: SP_return:
; CHECK-NEXT: ret void
; CHECK: CallStackCheckFailBlk:
; CHECK-NEXT: call void @__stack_chk_fail()
; CHECK-NEXT: unreachable
;
entry:
%retval = alloca i32, align 4
%a = alloca i32, align 4
%j = alloca i32 addrspace(1)*, align 8
store i32 0, i32* %retval
%load = load i32, i32* %a, align 4
%add = add nsw i32 %load, 1
store i32 %add, i32* %a, align 4
%a.addrspacecast = addrspacecast i32* %a to i32 addrspace(1)*
store i32 addrspace(1)* %a.addrspacecast, i32 addrspace(1)** %j, align 8
ret void
}
define void @cmpxchg_captures() #0 {
; CHECK-LABEL: @cmpxchg_captures(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[STACKGUARDSLOT:%.*]] = alloca i8*
; CHECK-NEXT: [[STACKGUARD:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: call void @llvm.stackprotector(i8* [[STACKGUARD]], i8** [[STACKGUARDSLOT]])
; CHECK-NEXT: [[RETVAL:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[A:%.*]] = alloca i32, align 4
; CHECK-NEXT: [[J:%.*]] = alloca i32*, align 8
; CHECK-NEXT: store i32 0, i32* [[RETVAL]]
; CHECK-NEXT: [[LOAD:%.*]] = load i32, i32* [[A]], align 4
; CHECK-NEXT: [[ADD:%.*]] = add nsw i32 [[LOAD]], 1
; CHECK-NEXT: store i32 [[ADD]], i32* [[A]], align 4
; CHECK-NEXT: [[TMP0:%.*]] = cmpxchg i32** [[J]], i32* [[A]], i32* null seq_cst monotonic
; CHECK-NEXT: [[STACKGUARD1:%.*]] = load volatile i8*, i8* addrspace(257)* inttoptr (i32 40 to i8* addrspace(257)*)
; CHECK-NEXT: [[TMP1:%.*]] = load volatile i8*, i8** [[STACKGUARDSLOT]]
; CHECK-NEXT: [[TMP2:%.*]] = icmp eq i8* [[STACKGUARD1]], [[TMP1]]
; CHECK-NEXT: br i1 [[TMP2]], label [[SP_RETURN:%.*]], label [[CALLSTACKCHECKFAILBLK:%.*]], !prof !0
; CHECK: SP_return:
; CHECK-NEXT: ret void
; CHECK: CallStackCheckFailBlk:
; CHECK-NEXT: call void @__stack_chk_fail()
; CHECK-NEXT: unreachable
;
entry:
%retval = alloca i32, align 4
%a = alloca i32, align 4
%j = alloca i32*, align 8
store i32 0, i32* %retval
%load = load i32, i32* %a, align 4
%add = add nsw i32 %load, 1
store i32 %add, i32* %a, align 4
cmpxchg i32** %j, i32* %a, i32* null seq_cst monotonic
ret void
}
attributes #0 = { sspstrong }
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