| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-linux-generic | FileCheck %s |
| |
| @e = global i16 0, align 2 |
| @a = global i32 0, align 4 |
| @c = global i32 0, align 4 |
| @b = global i64 0, align 8 |
| |
| ; Check the test instruction won't be optimizated by peephole opt. |
| |
| define dso_local i32 @main() nounwind { |
| ; CHECK-LABEL: main: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: pushq %rax |
| ; CHECK-NEXT: movq e@GOTPCREL(%rip), %rax |
| ; CHECK-NEXT: movw $1, (%rax) |
| ; CHECK-NEXT: movq b@GOTPCREL(%rip), %rax |
| ; CHECK-NEXT: movq $1, (%rax) |
| ; CHECK-NEXT: movq a@GOTPCREL(%rip), %rax |
| ; CHECK-NEXT: movl (%rax), %ecx |
| ; CHECK-NEXT: movl $-2, %eax |
| ; CHECK-NEXT: sarl %cl, %eax |
| ; CHECK-NEXT: movq c@GOTPCREL(%rip), %rdx |
| ; CHECK-NEXT: movl (%rdx), %edx |
| ; CHECK-NEXT: decl %edx |
| ; CHECK-NEXT: movzwl %ax, %eax |
| ; CHECK-NEXT: decl %eax |
| ; CHECK-NEXT: xorl %edx, %eax |
| ; CHECK-NEXT: notl %ecx |
| ; CHECK-NEXT: andl %eax, %ecx |
| ; CHECK-NEXT: testq %rcx, %rcx |
| ; CHECK-NEXT: jle .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: # %if.end |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: popq %rcx |
| ; CHECK-NEXT: retq |
| ; CHECK-NEXT: .LBB0_2: # %if.then |
| ; CHECK-NEXT: callq abort@PLT |
| entry: |
| store i16 1, ptr @e, align 2 |
| store i64 1, ptr @b, align 8 |
| %0 = load i32, ptr @a, align 4 |
| %shr = ashr i32 -2, %0 |
| %1 = load i32, ptr @c, align 4 |
| %sub = add i32 %1, -1 |
| %conv2 = zext i32 %sub to i64 |
| %2 = and i32 %shr, 65535 |
| %conv3 = zext i32 %2 to i64 |
| %sub4 = add nsw i64 %conv3, -1 |
| %xor = xor i64 %sub4, %conv2 |
| %neg5 = xor i32 %0, -1 |
| %conv6 = sext i32 %neg5 to i64 |
| %and = and i64 %xor, %conv6 |
| %cmp = icmp slt i64 %and, 1 |
| br i1 %cmp, label %if.then, label %if.end |
| |
| if.then: ; preds = %entry |
| call void @abort() #2 |
| unreachable |
| |
| if.end: ; preds = %entry |
| ret i32 0 |
| } |
| |
| declare void @abort() |