1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc -mtriple=x86_64-linux-gnu < %s | FileCheck %s
4 %"struct.std::atomic" = type { %"struct.std::atomic_bool" }
5 %"struct.std::atomic_bool" = type { %"struct.std::__atomic_base" }
6 %"struct.std::__atomic_base" = type { i8 }
8 ; CHECK-LABEL: _Z3fooRSt6atomicIbEb
9 define zeroext i1 @_Z3fooRSt6atomicIbEb(%"struct.std::atomic"* nocapture dereferenceable(1) %a, i1 returned zeroext %b) nounwind {
10 ; CHECK-LABEL: _Z3fooRSt6atomicIbEb:
11 ; CHECK: # %bb.0: # %entry
12 ; CHECK-NEXT: pushq %rax
13 ; CHECK-NEXT: movl %esi, %eax
14 ; CHECK-NEXT: movq %rdi, %rcx
15 ; CHECK-NEXT: shrq $3, %rcx
16 ; CHECK-NEXT: movb 2147450880(%rcx), %cl
17 ; CHECK-NEXT: testb %cl, %cl
18 ; CHECK-NEXT: je .LBB0_3
19 ; CHECK-NEXT: # %bb.1:
20 ; CHECK-NEXT: movl %edi, %edx
21 ; CHECK-NEXT: andb $7, %dl
22 ; CHECK-NEXT: cmpb %cl, %dl
23 ; CHECK-NEXT: jge .LBB0_2
24 ; CHECK-NEXT: .LBB0_3:
25 ; CHECK-NEXT: movl %eax, %ecx
26 ; CHECK-NEXT: xchgb %cl, (%rdi)
27 ; CHECK-NEXT: # kill: def $al killed $al killed $eax
28 ; CHECK-NEXT: popq %rcx
30 ; CHECK-NEXT: .LBB0_2:
31 ; CHECK-NEXT: callq __asan_report_store1
35 %frombool.i.i = zext i1 %b to i8
36 %_M_i.i.i = getelementptr inbounds %"struct.std::atomic", %"struct.std::atomic"* %a, i64 0, i32 0, i32 0, i32 0
37 %0 = ptrtoint i8* %_M_i.i.i to i64
39 %2 = add i64 %1, 2147450880
40 %3 = inttoptr i64 %2 to i8*
43 br i1 %5, label %6, label %11
45 ; <label>:6: ; preds = %entry
47 %8 = trunc i64 %7 to i8
48 %9 = icmp sge i8 %8, %4
49 br i1 %9, label %10, label %11
51 ; <label>:10: ; preds = %6
52 call void @__asan_report_store1(i64 %0)
53 call void asm sideeffect "", ""()
56 ; <label>:11: ; preds = %6, %entry
57 store atomic i8 %frombool.i.i, i8* %_M_i.i.i seq_cst, align 1
61 declare void @__asan_report_store1(i64)