1 # RUN: llc -march=x86-64 -start-after branch-folder -stop-after branch-folder -o /dev/null %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 JNE_1 %bb.2.entry, 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