1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2; RUN: llc < %s -mtriple=x86_64-linux-generic | FileCheck %s 3 4@e = global i16 0, align 2 5@a = global i32 0, align 4 6@c = global i32 0, align 4 7@b = global i64 0, align 8 8 9; Check the test instruction won't be optimizated by peephole opt. 10 11define dso_local i32 @main() nounwind { 12; CHECK-LABEL: main: 13; CHECK: # %bb.0: # %entry 14; CHECK-NEXT: movq e@GOTPCREL(%rip), %rax 15; CHECK-NEXT: movw $1, (%rax) 16; CHECK-NEXT: movq b@GOTPCREL(%rip), %rax 17; CHECK-NEXT: movq $1, (%rax) 18; CHECK-NEXT: movq a@GOTPCREL(%rip), %rax 19; CHECK-NEXT: movl (%rax), %ecx 20; CHECK-NEXT: movl $-2, %eax 21; CHECK-NEXT: sarl %cl, %eax 22; CHECK-NEXT: movq c@GOTPCREL(%rip), %rdx 23; CHECK-NEXT: movl (%rdx), %edx 24; CHECK-NEXT: decl %edx 25; CHECK-NEXT: movzwl %ax, %eax 26; CHECK-NEXT: decl %eax 27; CHECK-NEXT: xorl %edx, %eax 28; CHECK-NEXT: notl %ecx 29; CHECK-NEXT: andl %eax, %ecx 30; CHECK-NEXT: testq %rcx, %rcx 31; CHECK-NEXT: jle .LBB0_2 32; CHECK-NEXT: # %bb.1: # %if.end 33; CHECK-NEXT: xorl %eax, %eax 34; CHECK-NEXT: retq 35; CHECK-NEXT: .LBB0_2: # %if.then 36; CHECK-NEXT: pushq %rax 37; CHECK-NEXT: callq abort@PLT 38entry: 39 store i16 1, ptr @e, align 2 40 store i64 1, ptr @b, align 8 41 %0 = load i32, ptr @a, align 4 42 %shr = ashr i32 -2, %0 43 %1 = load i32, ptr @c, align 4 44 %sub = add i32 %1, -1 45 %conv2 = zext i32 %sub to i64 46 %2 = and i32 %shr, 65535 47 %conv3 = zext i32 %2 to i64 48 %sub4 = add nsw i64 %conv3, -1 49 %xor = xor i64 %sub4, %conv2 50 %neg5 = xor i32 %0, -1 51 %conv6 = sext i32 %neg5 to i64 52 %and = and i64 %xor, %conv6 53 %cmp = icmp slt i64 %and, 1 54 br i1 %cmp, label %if.then, label %if.end 55 56if.then: ; preds = %entry 57 call void @abort() #2 58 unreachable 59 60if.end: ; preds = %entry 61 ret i32 0 62} 63 64declare void @abort() 65