| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc -mtriple=x86_64-unknown -mattr=-sse4.2,+sse4.1 < %s | FileCheck %s |
| |
| ; Make sure we don't load from the location pointed to by %p |
| ; twice: it has non-obvious performance implications, and |
| ; the relevant transformation doesn't know how to update |
| ; the chains correctly. |
| ; PR10747 |
| |
| define <4 x i32> @test(<4 x i32>* %p) { |
| ; CHECK-LABEL: test: |
| ; CHECK: # %bb.0: |
| ; CHECK-NEXT: movaps (%rdi), %xmm0 |
| ; CHECK-NEXT: extractps $2, %xmm0, %eax |
| ; CHECK-NEXT: cmpl $3, %eax |
| ; CHECK-NEXT: je .LBB0_2 |
| ; CHECK-NEXT: # %bb.1: |
| ; CHECK-NEXT: xorps %xmm0, %xmm0 |
| ; CHECK-NEXT: .LBB0_2: |
| ; CHECK-NEXT: retq |
| %v = load <4 x i32>, <4 x i32>* %p |
| %e = extractelement <4 x i32> %v, i32 2 |
| %cmp = icmp eq i32 %e, 3 |
| %sel = select i1 %cmp, <4 x i32> %v, <4 x i32> zeroinitializer |
| ret <4 x i32> %sel |
| } |
