1 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=sse2,sse-unaligned-mem | FileCheck %s --check-prefix=SSE2 2 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=avx | FileCheck %s --check-prefix=AVX 3 4 ; Although we have the ability to fold an unaligned load with AVX 5 ; and under special conditions with some SSE implementations, we 6 ; can not fold the load under any circumstances in these test 7 ; cases because they are not 16-byte loads. The load must be 8 ; executed as a scalar ('movs*') with a zero extension to 9 ; 128-bits and then used in the packed logical ('andp*') op. 10 ; PR22371 - http://llvm.org/bugs/show_bug.cgi?id=22371 11 12 define double @load_double_no_fold(double %x, double %y) { 13 ; SSE2-LABEL: load_double_no_fold: 14 ; SSE2: BB#0: 15 ; SSE2-NEXT: cmplesd %xmm0, %xmm1 16 ; SSE2-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero 17 ; SSE2-NEXT: andpd %xmm1, %xmm0 18 ; SSE2-NEXT: retq 19 ; 20 ; AVX-LABEL: load_double_no_fold: 21 ; AVX: BB#0: 22 ; AVX-NEXT: vcmplesd %xmm0, %xmm1, %xmm0 23 ; AVX-NEXT: vmovsd {{.*#+}} xmm1 = mem[0],zero 24 ; AVX-NEXT: vandpd %xmm1, %xmm0, %xmm0 25 ; AVX-NEXT: retq 26 27 %cmp = fcmp oge double %x, %y 28 %zext = zext i1 %cmp to i32 29 %conv = sitofp i32 %zext to double 30 ret double %conv 31 } 32 33 define float @load_float_no_fold(float %x, float %y) { 34 ; SSE2-LABEL: load_float_no_fold: 35 ; SSE2: BB#0: 36 ; SSE2-NEXT: cmpless %xmm0, %xmm1 37 ; SSE2-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero 38 ; SSE2-NEXT: andps %xmm1, %xmm0 39 ; SSE2-NEXT: retq 40 ; 41 ; AVX-LABEL: load_float_no_fold: 42 ; AVX: BB#0: 43 ; AVX-NEXT: vcmpless %xmm0, %xmm1, %xmm0 44 ; AVX-NEXT: vmovss {{.*#+}} xmm1 = mem[0],zero,zero,zero 45 ; AVX-NEXT: vandps %xmm1, %xmm0, %xmm0 46 ; AVX-NEXT: retq 47 48 %cmp = fcmp oge float %x, %y 49 %zext = zext i1 %cmp to i32 50 %conv = sitofp i32 %zext to float 51 ret float %conv 52 } 53 54
