1 # RUN: llc -march=x86-64 -run-pass none -o - %s | FileCheck %s
2 # This test ensures that the MIR parser parses the external symbol machine
6 @__stack_chk_guard = external global i8*
8 define i32 @test(i32 %n) #0 {
10 %StackGuardSlot = alloca i8*
11 %StackGuard = load i8*, i8** @__stack_chk_guard
12 call void @llvm.stackprotector(i8* %StackGuard, i8** %StackGuardSlot)
13 %a = alloca [128 x i32], align 16
14 %idxprom = sext i32 %n to i64
15 %arrayidx = getelementptr inbounds [128 x i32], [128 x i32]* %a, i64 0, i64 %idxprom
16 %0 = load i32, i32* %arrayidx, align 4
17 call void @llvm.stackprotectorcheck(i8** @__stack_chk_guard)
21 declare void @llvm.stackprotector(i8*, i8**) #1
23 declare void @llvm.stackprotectorcheck(i8**) #1
25 attributes #0 = { ssp "stack-protector-buffer-size"="8" }
26 attributes #1 = { nounwind }
31 tracksRegLiveness: true
34 successors: %bb.1.entry, %bb.2.entry
37 $rsp = SUB64ri32 $rsp, 520, implicit-def $eflags
38 $rcx = LOAD_STACK_GUARD
39 MOV64mr $rsp, 1, _, 512, _, $rcx
40 $rax = MOVSX64rr32 $edi
41 $eax = MOV32rm $rsp, 4, $rax, 0, _
42 CMP64rm $rcx, $rsp, 1, _, 512, _, implicit-def $eflags
43 JCC_1 %bb.2.entry, 5, implicit $eflags
48 $rsp = ADD64ri32 $rsp, 520, implicit-def $eflags
52 ; CHECK: CALL64pcrel32 &__stack_chk_fail,
53 ; CHECK-NEXT: CALL64pcrel32 &__stack_chk_fail.09-_,
54 ; CHECK-NEXT: CALL64pcrel32 &"__stack_chk_fail$",
55 ; CHECK-NEXT: CALL64pcrel32 &"$Quoted \09 External symbol \11 ",
56 ; CHECK-NEXT: CALL64pcrel32 &__stack_chk_fail + 2,
57 ; CHECK-NEXT: CALL64pcrel32 &" check stack - 20" - 20,
58 CALL64pcrel32 &__stack_chk_fail, csr_64, implicit $rsp, implicit-def $rsp
59 CALL64pcrel32 &__stack_chk_fail.09-_, csr_64, implicit $rsp, implicit-def $rsp
60 CALL64pcrel32 &__stack_chk_fail$, csr_64, implicit $rsp, implicit-def $rsp
61 CALL64pcrel32 &"$Quoted \09 External symbol \11 ", csr_64, implicit $rsp, implicit-def $rsp
62 CALL64pcrel32 &__stack_chk_fail + 2, csr_64, implicit $rsp, implicit-def $rsp
63 CALL64pcrel32 &" check stack - 20" - 20, csr_64, implicit $rsp, implicit-def $rsp