1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py 2 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+sse2 | FileCheck %s --check-prefix=CHECK --check-prefix=SSE2 3 ; RUN: llc < %s -mtriple=x86_64-apple-darwin -mattr=+sse4.1 | FileCheck %s --check-prefix=CHECK --check-prefix=SSE41 4 5 ; Make sure that the conversion between v4i8 to v2i16 is not a simple bitcast. 6 define void @prom_bug(<4 x i8> %t, i16* %p) { 7 ; SSE2-LABEL: prom_bug: 8 ; SSE2: ## %bb.0: 9 ; SSE2-NEXT: pand {{.*}}(%rip), %xmm0 10 ; SSE2-NEXT: packuswb %xmm0, %xmm0 11 ; SSE2-NEXT: packuswb %xmm0, %xmm0 12 ; SSE2-NEXT: pextrw $0, %xmm0, %eax 13 ; SSE2-NEXT: movw %ax, (%rdi) 14 ; SSE2-NEXT: retq 15 ; 16 ; SSE41-LABEL: prom_bug: 17 ; SSE41: ## %bb.0: 18 ; SSE41-NEXT: pshufb {{.*#+}} xmm0 = xmm0[0,4,8,12,u,u,u,u,u,u,u,u,u,u,u,u] 19 ; SSE41-NEXT: pextrw $0, %xmm0, (%rdi) 20 ; SSE41-NEXT: retq 21 %r = bitcast <4 x i8> %t to <2 x i16> 22 %o = extractelement <2 x i16> %r, i32 0 23 store i16 %o, i16* %p 24 ret void 25 } 26 27
