; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+sse2 -fast-isel -fast-isel-abort=1 | FileCheck %s --check-prefix=SSE ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx -fast-isel -fast-isel-abort=1 | FileCheck %s --check-prefix=AVX ; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mattr=+avx512f -fast-isel -fast-isel-abort=1 | FileCheck %s --check-prefix=AVX ; ; Verify that fast-isel doesn't select legacy SSE instructions on targets that ; feature AVX. ; ; Test cases are obtained from the following code snippet: ; /// ; double single_to_double_rr(float x) { ; return (double)x; ; } ; float double_to_single_rr(double x) { ; return (float)x; ; } ; double single_to_double_rm(ptr x) { ; return (double)*x; ; } ; float double_to_single_rm(ptr x) { ; return (float)*x; ; } ; /// define double @single_to_double_rr(float %x) { ; SSE-LABEL: single_to_double_rr: ; SSE: # %bb.0: # %entry ; SSE-NEXT: cvtss2sd %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: single_to_double_rr: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vcvtss2sd %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq entry: %conv = fpext float %x to double ret double %conv } define float @double_to_single_rr(double %x) { ; SSE-LABEL: double_to_single_rr: ; SSE: # %bb.0: # %entry ; SSE-NEXT: cvtsd2ss %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: double_to_single_rr: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vcvtsd2ss %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq entry: %conv = fptrunc double %x to float ret float %conv } define double @single_to_double_rm(ptr %x) { ; SSE-LABEL: single_to_double_rm: ; SSE: # %bb.0: # %entry ; SSE-NEXT: movss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; SSE-NEXT: cvtss2sd %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: single_to_double_rm: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vmovss {{.*#+}} xmm0 = mem[0],zero,zero,zero ; AVX-NEXT: vcvtss2sd %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq entry: %0 = load float, ptr %x, align 4 %conv = fpext float %0 to double ret double %conv } define double @single_to_double_rm_optsize(ptr %x) optsize { ; SSE-LABEL: single_to_double_rm_optsize: ; SSE: # %bb.0: # %entry ; SSE-NEXT: cvtss2sd (%rdi), %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: single_to_double_rm_optsize: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vcvtss2sd (%rdi), %xmm0, %xmm0 ; AVX-NEXT: retq entry: %0 = load float, ptr %x, align 4 %conv = fpext float %0 to double ret double %conv } define float @double_to_single_rm(ptr %x) { ; SSE-LABEL: double_to_single_rm: ; SSE: # %bb.0: # %entry ; SSE-NEXT: movsd {{.*#+}} xmm0 = mem[0],zero ; SSE-NEXT: cvtsd2ss %xmm0, %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: double_to_single_rm: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vmovsd {{.*#+}} xmm0 = mem[0],zero ; AVX-NEXT: vcvtsd2ss %xmm0, %xmm0, %xmm0 ; AVX-NEXT: retq entry: %0 = load double, ptr %x, align 8 %conv = fptrunc double %0 to float ret float %conv } define float @double_to_single_rm_optsize(ptr %x) optsize { ; SSE-LABEL: double_to_single_rm_optsize: ; SSE: # %bb.0: # %entry ; SSE-NEXT: cvtsd2ss (%rdi), %xmm0 ; SSE-NEXT: retq ; ; AVX-LABEL: double_to_single_rm_optsize: ; AVX: # %bb.0: # %entry ; AVX-NEXT: vcvtsd2ss (%rdi), %xmm0, %xmm0 ; AVX-NEXT: retq entry: %0 = load double, ptr %x, align 8 %conv = fptrunc double %0 to float ret float %conv }