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
3# operands correctly.
4
5--- |
6  @__stack_chk_guard = external global i8*
7
8  define i32 @test(i32 %n) #0 {
9  entry:
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)
18    ret i32 %0
19  }
20
21  declare void @llvm.stackprotector(i8*, i8**) #1
22
23  declare void @llvm.stackprotectorcheck(i8**) #1
24
25  attributes #0 = { ssp "stack-protector-buffer-size"="8" }
26  attributes #1 = { nounwind }
27
28...
29---
30name:            test
31tracksRegLiveness: true
32body: |
33  bb.0.entry:
34    successors: %bb.1.entry, %bb.2.entry
35    liveins: %edi
36
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
44
45  bb.1.entry:
46    liveins: %eax
47
48    %rsp = ADD64ri32 %rsp, 520, implicit-def %eflags
49    RETQ %eax
50
51  bb.2.entry:
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
64...
65