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: movq %rdi, %rax
13 ; CHECK-NEXT: shrq $3, %rax
14 ; CHECK-NEXT: movb 2147450880(%rax), %al
15 ; CHECK-NEXT: testb %al, %al
16 ; CHECK-NEXT: je .LBB0_3
18 ; CHECK-NEXT: movl %edi, %ecx
19 ; CHECK-NEXT: andl $7, %ecx
20 ; CHECK-NEXT: cmpb %al, %cl
21 ; CHECK-NEXT: jge .LBB0_2
22 ; CHECK-NEXT: .LBB0_3:
23 ; CHECK-NEXT: movl %esi, %eax
24 ; CHECK-NEXT: xchgb %al, (%rdi)
25 ; CHECK-NEXT: movl %esi, %eax
27 ; CHECK-NEXT: .LBB0_2:
28 ; CHECK-NEXT: pushq %rax
29 ; CHECK-NEXT: callq __asan_report_store1
33 %frombool.i.i = zext i1 %b to i8
34 %_M_i.i.i = getelementptr inbounds %"struct.std::atomic", %"struct.std::atomic"* %a, i64 0, i32 0, i32 0, i32 0
35 %0 = ptrtoint i8* %_M_i.i.i to i64
37 %2 = add i64 %1, 2147450880
38 %3 = inttoptr i64 %2 to i8*
41 br i1 %5, label %6, label %11
43 ; <label>:6: ; preds = %entry
45 %8 = trunc i64 %7 to i8
46 %9 = icmp sge i8 %8, %4
47 br i1 %9, label %10, label %11
49 ; <label>:10: ; preds = %6
50 call void @__asan_report_store1(i64 %0)
51 call void asm sideeffect "", ""()
54 ; <label>:11: ; preds = %6, %entry
55 store atomic i8 %frombool.i.i, i8* %_M_i.i.i seq_cst, align 1
59 declare void @__asan_report_store1(i64)