1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc %s -O2 -mtriple=i686-unknown-linux-gnu -o - | FileCheck %s 3 4@f = global ptr zeroinitializer 5 6; PR39391 - The load of %v1 should be scheduled before the zeroing of the A-D registers. 7 8define void @g() #0 { 9; CHECK-LABEL: g: 10; CHECK: # %bb.0: # %entry 11; CHECK-NEXT: pushl %ebp 12; CHECK-NEXT: .cfi_def_cfa_offset 8 13; CHECK-NEXT: .cfi_offset %ebp, -8 14; CHECK-NEXT: movl %esp, %ebp 15; CHECK-NEXT: .cfi_def_cfa_register %ebp 16; CHECK-NEXT: pushl %ebx 17; CHECK-NEXT: pushl %esi 18; CHECK-NEXT: subl $16, %esp 19; CHECK-NEXT: .cfi_offset %esi, -16 20; CHECK-NEXT: .cfi_offset %ebx, -12 21; CHECK-NEXT: movl f, %esi 22; CHECK-NEXT: movzbl (%esi), %eax 23; CHECK-NEXT: movb %al, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Spill 24; CHECK-NEXT: xorl %eax, %eax 25; CHECK-NEXT: xorl %edx, %edx 26; CHECK-NEXT: xorl %ecx, %ecx 27; CHECK-NEXT: xorl %ebx, %ebx 28; CHECK-NEXT: lock cmpxchg8b (%esi) 29; CHECK-NEXT: cmpb $0, {{[-0-9]+}}(%e{{[sb]}}p) # 1-byte Folded Reload 30; CHECK-NEXT: je .LBB0_2 31; CHECK-NEXT: # %bb.1: # %. 32; CHECK-NEXT: calll m@PLT 33; CHECK-NEXT: .LBB0_2: # %k.end 34entry: 35 %p = load ptr, ptr @f 36 %v1 = load atomic i8, ptr %p monotonic, align 1 37 %v2 = load atomic i64, ptr %p monotonic, align 8 38 %j.h = icmp eq i8 %v1, 0 39 br i1 %j.h, label %k.end, label %. 40 41.: ; preds = %entry 42 %v3 = call i32 @m() 43 unreachable 44 45k.end: ; preds = %entry 46 unreachable 47} 48 49declare i32 @m() 50 51attributes #0 = { noimplicitfloat "frame-pointer"="non-leaf" } 52