| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-- | FileCheck %s |
| |
| @X = common dso_local global i16 0 ; <i16*> [#uses=1] |
| |
| define dso_local i32 @foo(i32 %N) nounwind { |
| ; CHECK-LABEL: foo: |
| ; CHECK: # %bb.0: # %entry |
| ; CHECK-NEXT: xorl %eax, %eax |
| ; CHECK-NEXT: testl %edi, %edi |
| ; CHECK-NEXT: jle .LBB0_2 |
| ; CHECK-NEXT: .p2align 4, 0x90 |
| ; CHECK-NEXT: .LBB0_1: # %bb |
| ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1 |
| ; CHECK-NEXT: movw %ax, {{.*}}(%rip) |
| ; CHECK-NEXT: incl %eax |
| ; CHECK-NEXT: cmpl %eax, %edi |
| ; CHECK-NEXT: jne .LBB0_1 |
| ; CHECK-NEXT: .LBB0_2: # %return |
| ; CHECK-NEXT: retq |
| entry: |
| %0 = icmp sgt i32 %N, 0 ; <i1> [#uses=1] |
| br i1 %0, label %bb, label %return |
| |
| bb: ; preds = %bb, %entry |
| %i.03 = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] ; <i32> [#uses=2] |
| %1 = trunc i32 %i.03 to i16 ; <i16> [#uses=1] |
| store volatile i16 %1, i16* @X, align 2 |
| %indvar.next = add i32 %i.03, 1 ; <i32> [#uses=2] |
| %exitcond = icmp eq i32 %indvar.next, %N ; <i1> [#uses=1] |
| br i1 %exitcond, label %return, label %bb |
| |
| return: ; preds = %bb, %entry |
| %h = phi i32 [ 0, %entry ], [ %indvar.next, %bb ] |
| ret i32 %h |
| } |