unsigned Align = DL->getPrefTypeAlignment(Type::getInt8PtrTy(M.getContext()));
// Generate code to load the content of the guard slot.
- SDValue GuardVal = DAG.getLoad(
+ SDValue StackSlot = DAG.getLoad(
PtrTy, dl, DAG.getEntryNode(), StackSlotPtr,
MachinePointerInfo::getFixedStack(DAG.getMachineFunction(), FI), Align,
MachineMemOperand::MOVolatile);
- if (TLI.useStackGuardXorFP())
- GuardVal = TLI.emitStackGuardXorFP(DAG, GuardVal, dl);
-
// Retrieve guard check function, nullptr if instrumentation is inlined.
if (const Value *GuardCheck = TLI.getSSPStackGuardCheck(M)) {
// The target provides a guard check function to validate the guard value.
TargetLowering::ArgListTy Args;
TargetLowering::ArgListEntry Entry;
- Entry.Node = GuardVal;
+ Entry.Node = StackSlot;
Entry.Ty = FnTy->getParamType(0);
if (Fn->hasAttribute(1, Attribute::AttrKind::InReg))
Entry.IsInReg = true;
// Perform the comparison via a subtract/getsetcc.
EVT VT = Guard.getValueType();
- SDValue Sub = DAG.getNode(ISD::SUB, dl, VT, Guard, GuardVal);
+ SDValue Sub = DAG.getNode(ISD::SUB, dl, VT, Guard, StackSlot);
SDValue Cmp = DAG.getSetCC(dl, TLI.getSetCCResultType(DAG.getDataLayout(),
*DAG.getContext(),
// If the sub is not 0, then we know the guard/stackslot do not equal, so
// branch to failure MBB.
SDValue BrCond = DAG.getNode(ISD::BRCOND, dl,
- MVT::Other, GuardVal.getOperand(0),
+ MVT::Other, StackSlot.getOperand(0),
Cmp, DAG.getBasicBlock(SPD.getFailureMBB()));
// Otherwise branch to success MBB.
SDValue Br = DAG.getNode(ISD::BR, dl,
MachinePointerInfo(Global, 0), Align,
MachineMemOperand::MOVolatile);
}
- if (TLI.useStackGuardXorFP())
- Res = TLI.emitStackGuardXorFP(DAG, Res, sdl);
DAG.setRoot(Chain);
setValue(&I, Res);
return nullptr;
-; RUN: llc -mtriple=i386-pc-windows-msvc < %s -o - | FileCheck -check-prefix=MSVC-X86 %s
-; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s -o - | FileCheck -check-prefix=MSVC-X64 %s
-; Make sure fastisel falls back and does something secure.
-; RUN: llc -mtriple=i686-pc-windows-msvc -O0 < %s -o - | FileCheck -check-prefix=MSVC-X86-O0 %s
-; RUN: llc -mtriple=x86_64-pc-windows-msvc -O0 < %s -o - | FileCheck -check-prefix=MSVC-X64-O0 %s
+; RUN: llc -mtriple=i386-pc-windows-msvc < %s -o - | FileCheck -check-prefix=MSVC-I386 %s
+; RUN: llc -mtriple=x86_64-pc-windows-msvc < %s -o - | FileCheck -check-prefix=MSVC-64 %s
+
+; MSVC-I386: movl ___security_cookie, %[[REG1:[a-z]*]]
+; MSVC-I386: movl %[[REG1]], [[SLOT:[0-9]*]](%esp)
+; MSVC-I386: calll _strcpy
+; MSVC-I386: movl [[SLOT]](%esp), %ecx
+; MSVC-I386: calll @__security_check_cookie@4
+; MSVC-I386: retl
+
+; MSVC-64: movq __security_cookie(%rip), %[[REG1:[a-z]*]]
+; MSVC-64: movq %[[REG1]], [[SLOT:[0-9]*]](%rsp)
+; MSVC-64: callq strcpy
+; MSVC-64: movq [[SLOT]](%rsp), %rcx
+; MSVC-64: callq __security_check_cookie
@"\01LC" = internal constant [11 x i8] c"buf == %s\0A\00" ; <[11 x i8]*> [#uses=1]
entry:
%a_addr = alloca i8* ; <i8**> [#uses=2]
%buf = alloca [8 x i8] ; <[8 x i8]*> [#uses=2]
+ %"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
store i8* %a, i8** %a_addr
%buf1 = bitcast [8 x i8]* %buf to i8* ; <i8*> [#uses=1]
%0 = load i8*, i8** %a_addr, align 4 ; <i8*> [#uses=1]
ret void
}
-; MSVC-X86-LABEL: _test:
-; MSVC-X86: movl ___security_cookie, %[[REG1:[^ ]*]]
-; MSVC-X86: xorl %esp, %[[REG1]]
-; MSVC-X86: movl %[[REG1]], [[SLOT:[0-9]*]](%esp)
-; MSVC-X86: calll _strcpy
-; MSVC-X86: movl [[SLOT]](%esp), %ecx
-; MSVC-X86: xorl %esp, %ecx
-; MSVC-X86: calll @__security_check_cookie@4
-; MSVC-X86: retl
-
-; MSVC-X64-LABEL: test:
-; MSVC-X64: movq __security_cookie(%rip), %[[REG1:[^ ]*]]
-; MSVC-X64: xorq %rsp, %[[REG1]]
-; MSVC-X64: movq %[[REG1]], [[SLOT:[0-9]*]](%rsp)
-; MSVC-X64: callq strcpy
-; MSVC-X64: movq [[SLOT]](%rsp), %rcx
-; MSVC-X64: xorq %rsp, %rcx
-; MSVC-X64: callq __security_check_cookie
-; MSVC-X64: retq
-
-; MSVC-X86-O0-LABEL: _test:
-; MSVC-X86-O0: movl ___security_cookie, %[[REG1:[^ ]*]]
-; MSVC-X86-O0: xorl %esp, %[[REG1]]
-; MSVC-X86-O0: movl %[[REG1]], [[SLOT:[0-9]*]](%esp)
-; MSVC-X86-O0: calll _strcpy
-; MSVC-X86-O0: movl [[SLOT]](%esp), %[[REG1:[^ ]*]]
-; MSVC-X86-O0: xorl %esp, %[[REG1]]
-; MSVC-X86-O0: movl %[[REG1]], %ecx
-; MSVC-X86-O0: calll @__security_check_cookie@4
-; MSVC-X86-O0: retl
-
-; MSVC-X64-O0-LABEL: test:
-; MSVC-X64-O0: movq __security_cookie(%rip), %[[REG1:[^ ]*]]
-; MSVC-X64-O0: xorq %rsp, %[[REG1]]
-; MSVC-X64-O0: movq %[[REG1]], [[SLOT:[0-9]*]](%rsp)
-; MSVC-X64-O0: callq strcpy
-; MSVC-X64-O0: movq [[SLOT]](%rsp), %[[REG1:[^ ]*]]
-; MSVC-X64-O0: xorq %rsp, %[[REG1]]
-; MSVC-X64-O0: movq %[[REG1]], %rcx
-; MSVC-X64-O0: callq __security_check_cookie
-; MSVC-X64-O0: retq
-
-
-declare void @escape(i32*)
-
-define void @test_vla(i32 %n) nounwind ssp {
- %vla = alloca i32, i32 %n
- call void @escape(i32* %vla)
- ret void
-}
-
-; MSVC-X86-LABEL: _test_vla:
-; MSVC-X86: pushl %ebp
-; MSVC-X86: movl %esp, %ebp
-; MSVC-X86: movl ___security_cookie, %[[REG1:[^ ]*]]
-; MSVC-X86: xorl %ebp, %[[REG1]]
-; MSVC-X86: movl %[[REG1]], [[SLOT:-[0-9]*]](%ebp)
-; MSVC-X86: calll __chkstk
-; MSVC-X86: pushl
-; MSVC-X86: calll _escape
-; MSVC-X86: movl [[SLOT]](%ebp), %ecx
-; MSVC-X86: xorl %ebp, %ecx
-; MSVC-X86: calll @__security_check_cookie@4
-; MSVC-X86: movl %ebp, %esp
-; MSVC-X86: popl %ebp
-; MSVC-X86: retl
-
-; MSVC-X64-LABEL: test_vla:
-; MSVC-X64: pushq %rbp
-; MSVC-X64: subq $16, %rsp
-; MSVC-X64: leaq 16(%rsp), %rbp
-; MSVC-X64: movq __security_cookie(%rip), %[[REG1:[^ ]*]]
-; MSVC-X64: xorq %rbp, %[[REG1]]
-; MSVC-X64: movq %[[REG1]], [[SLOT:-[0-9]*]](%rbp)
-; MSVC-X64: callq __chkstk
-; MSVC-X64: callq escape
-; MSVC-X64: movq [[SLOT]](%rbp), %rcx
-; MSVC-X64: xorq %rbp, %rcx
-; MSVC-X64: callq __security_check_cookie
-; MSVC-X64: retq
-
-
-; This case is interesting because we address local variables with RBX but XOR
-; the guard value with RBP. That's fine, either value will do, as long as they
-; are the same across the life of the frame.
-
-define void @test_vla_realign(i32 %n) nounwind ssp {
- %realign = alloca i32, align 32
- %vla = alloca i32, i32 %n
- call void @escape(i32* %realign)
- call void @escape(i32* %vla)
- ret void
-}
-
-; MSVC-X86-LABEL: _test_vla_realign:
-; MSVC-X86: pushl %ebp
-; MSVC-X86: movl %esp, %ebp
-; MSVC-X86: pushl %esi
-; MSVC-X86: andl $-32, %esp
-; MSVC-X86: subl $32, %esp
-; MSVC-X86: movl %esp, %esi
-; MSVC-X86: movl ___security_cookie, %[[REG1:[^ ]*]]
-; MSVC-X86: xorl %ebp, %[[REG1]]
-; MSVC-X86: movl %[[REG1]], [[SLOT:[0-9]*]](%esi)
-; MSVC-X86: calll __chkstk
-; MSVC-X86: pushl
-; MSVC-X86: calll _escape
-; MSVC-X86: movl [[SLOT]](%esi), %ecx
-; MSVC-X86: xorl %ebp, %ecx
-; MSVC-X86: calll @__security_check_cookie@4
-; MSVC-X86: leal -8(%ebp), %esp
-; MSVC-X86: popl %esi
-; MSVC-X86: popl %ebp
-; MSVC-X86: retl
-
-; MSVC-X64-LABEL: test_vla_realign:
-; MSVC-X64: pushq %rbp
-; MSVC-X64: pushq %rbx
-; MSVC-X64: subq $32, %rsp
-; MSVC-X64: leaq 32(%rsp), %rbp
-; MSVC-X64: andq $-32, %rsp
-; MSVC-X64: movq %rsp, %rbx
-; MSVC-X64: movq __security_cookie(%rip), %[[REG1:[^ ]*]]
-; MSVC-X64: xorq %rbp, %[[REG1]]
-; MSVC-X64: movq %[[REG1]], [[SLOT:[0-9]*]](%rbx)
-; MSVC-X64: callq __chkstk
-; MSVC-X64: callq escape
-; MSVC-X64: movq [[SLOT]](%rbx), %rcx
-; MSVC-X64: xorq %rbp, %rcx
-; MSVC-X64: callq __security_check_cookie
-; MSVC-X64: retq
-
-
declare i8* @strcpy(i8*, i8*) nounwind
declare i32 @printf(i8*, ...) nounwind