| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py |
| ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+sse2 | FileCheck %s --check-prefix=SSE2 |
| ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+sse4.1 | FileCheck %s --check-prefix=SSE41 |
| |
| ; Make sure that the conversion between v4i8 to v2i16 is not a simple bitcast. |
| define void @prom_bug(<4 x i8> %t, i16* %p) { |
| ; SSE2-LABEL: prom_bug: |
| ; SSE2: ## %bb.0: |
| ; SSE2-NEXT: movd %xmm0, %eax |
| ; SSE2-NEXT: movw %ax, (%rdi) |
| ; SSE2-NEXT: retq |
| ; |
| ; SSE41-LABEL: prom_bug: |
| ; SSE41: ## %bb.0: |
| ; SSE41-NEXT: pextrw $0, %xmm0, (%rdi) |
| ; SSE41-NEXT: retq |
| %r = bitcast <4 x i8> %t to <2 x i16> |
| %o = extractelement <2 x i16> %r, i32 0 |
| store i16 %o, i16* %p |
| ret void |
| } |
| |
