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68 lines
2.3 KiB
68 lines
2.3 KiB
# RUN: not llc -march=x86-64 -run-pass none -o /dev/null %s 2>&1 | FileCheck %s
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--- |
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@.str = private unnamed_addr constant [4 x i8] c"%s\0A\00", align 1
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@__stack_chk_guard = external global i8*
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define i32 @test() #0 {
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entry:
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%StackGuardSlot = alloca i8*
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%StackGuard = load i8*, i8** @__stack_chk_guard
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call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot)
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%test = alloca i8*, align 8
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%a = alloca i8, i64 5
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store i8* %a, i8** %test, align 8
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%b = load i8*, i8** %test, align 8
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%call = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([4 x i8], [4 x i8]* @.str, i32 0, i32 0), i8* %b)
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call void @llvm.stackprotectorcheck(i8** @__stack_chk_guard)
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ret i32 %call
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}
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declare i32 @printf(i8*, ...)
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declare void @llvm.stackprotector(i8*, i8**) #1
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declare void @llvm.stackprotectorcheck(i8**) #2
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attributes #0 = { ssp "stack-protector-buffer-size"="5" }
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attributes #1 = { nounwind }
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attributes #2 = { nounwind argmemonly }
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...
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---
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name: test
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alignment: 16
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tracksRegLiveness: true
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frameInfo:
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stackSize: 40
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maxAlignment: 8
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adjustsStack: true
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hasCalls: true
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# CHECK: [[@LINE+1]]:21: expected a stack object
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stackProtector: '0'
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fixedStack:
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- { id: 0, type: spill-slot, offset: -16, size: 8, alignment: 16,
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callee-saved-register: '$rbx' }
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stack:
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- { id: 0, name: StackGuardSlot, offset: -24, size: 8, alignment: 8 }
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- { id: 1, name: test, offset: -40, size: 8, alignment: 8 }
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- { id: 2, name: a, offset: -29, size: 5, alignment: 1 }
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body: |
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bb.0.entry:
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liveins: $rbx, $rbx
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frame-setup PUSH64r killed $rbx, implicit-def $rsp, implicit $rsp
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$rsp = frame-setup SUB64ri8 $rsp, 32, implicit-def dead $eflags
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$rbx = LOAD_STACK_GUARD :: (invariant load 8 from %ir.__stack_chk_guard)
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MOV64mr $rsp, 1, _, 24, _, $rbx
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$rsi = LEA64r $rsp, 1, _, 19, _
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MOV64mr $rsp, 1, _, 8, _, $rsi
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$rdi = LEA64r $rip, 1, _, @.str, _
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dead $eax = MOV32r0 implicit-def dead $eflags, implicit-def $al
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CALL64pcrel32 @printf, csr_64, implicit $rsp, implicit $rdi, implicit $rsi, implicit $al, implicit-def $rsp, implicit-def $eax
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CMP64rm killed $rbx, $rsp, 1, _, 24, _, implicit-def $eflags
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$rsp = ADD64ri8 $rsp, 32, implicit-def dead $eflags
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$rbx = POP64r implicit-def $rsp, implicit $rsp
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RETQ $eax
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...
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