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# RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
# This test ensures that the MIR parser parses the external symbol machine
# operands correctly.
--- |
@__stack_chk_guard = external global i8*
define i32 @test(i32 %n) #0 {
entry:
%StackGuardSlot = alloca i8*
%StackGuard = load i8*, i8** @__stack_chk_guard
call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot)
%a = alloca [128 x i32], align 16
%idxprom = sext i32 %n to i64
%arrayidx = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 %idxprom
%0 = load i32, i32* %arrayidx, align 4
call void @llvm.stackprotectorcheck(i8** @__stack_chk_guard)
ret i32 %0
}
declare void @llvm.stackprotector(i8*, i8**) #1
declare void @llvm.stackprotectorcheck(i8**) #1
attributes #0 = { ssp "stack-protector-buffer-size"="8" }
attributes #1 = { nounwind }
...
---
name: test
tracksRegLiveness: true
body: |
bb.0.entry:
successors: %bb.1.entry, %bb.2.entry
liveins: $edi
$rsp = SUB64ri32 $rsp, 520, implicit-def $eflags
$rcx = LOAD_STACK_GUARD
MOV64mr $rsp, 1, _, 512, _, $rcx
$rax = MOVSX64rr32 $edi
$eax = MOV32rm $rsp, 4, $rax, 0, _
CMP64rm $rcx, $rsp, 1, _, 512, _, implicit-def $eflags
JCC_1 %bb.2.entry, 5, implicit $eflags
bb.1.entry:
liveins: $eax
$rsp = ADD64ri32 $rsp, 520, implicit-def $eflags
RET64 $eax
bb.2.entry:
; CHECK: CALL64pcrel32 &__stack_chk_fail,
; CHECK-NEXT: CALL64pcrel32 &__stack_chk_fail.09-_,
; CHECK-NEXT: CALL64pcrel32 &"__stack_chk_fail$",
; CHECK-NEXT: CALL64pcrel32 &"$Quoted \09 External symbol \11 ",
; CHECK-NEXT: CALL64pcrel32 &__stack_chk_fail + 2,
; CHECK-NEXT: CALL64pcrel32 &" check stack - 20" - 20,
CALL64pcrel32 &__stack_chk_fail, csr_64, implicit $rsp, implicit-def $rsp
CALL64pcrel32 &__stack_chk_fail.09-_, csr_64, implicit $rsp, implicit-def $rsp
CALL64pcrel32 &__stack_chk_fail$, csr_64, implicit $rsp, implicit-def $rsp
CALL64pcrel32 &"$Quoted \09 External symbol \11 ", csr_64, implicit $rsp, implicit-def $rsp
CALL64pcrel32 &__stack_chk_fail + 2, csr_64, implicit $rsp, implicit-def $rsp
CALL64pcrel32 &" check stack - 20" - 20, csr_64, implicit $rsp, implicit-def $rsp
...
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