1; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -mattr=-f16c | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-LIBCALL 2; RUN: llc < %s -march=x86-64 -mtriple=x86_64-unknown-linux-gnu -mcpu=corei7 -mattr=+f16c | FileCheck %s -check-prefix=CHECK -check-prefix=CHECK-F16C 3 4define void @test_load_store(half* %in, half* %out) { 5; CHECK-LABEL: test_load_store: 6; CHECK: movw (%rdi), [[TMP:%[a-z0-9]+]] 7; CHECK: movw [[TMP]], (%rsi) 8 %val = load half* %in 9 store half %val, half* %out 10 ret void 11} 12 13define i16 @test_bitcast_from_half(half* %addr) { 14; CHECK-LABEL: test_bitcast_from_half: 15; CHECK: movzwl (%rdi), %eax 16 %val = load half* %addr 17 %val_int = bitcast half %val to i16 18 ret i16 %val_int 19} 20 21define void @test_bitcast_to_half(half* %addr, i16 %in) { 22; CHECK-LABEL: test_bitcast_to_half: 23; CHECK: movw %si, (%rdi) 24 %val_fp = bitcast i16 %in to half 25 store half %val_fp, half* %addr 26 ret void 27} 28 29define float @test_extend32(half* %addr) { 30; CHECK-LABEL: test_extend32: 31 32; CHECK-LIBCALL: jmp __gnu_h2f_ieee 33; CHECK-FP16: vcvtph2ps 34 %val16 = load half* %addr 35 %val32 = fpext half %val16 to float 36 ret float %val32 37} 38 39define double @test_extend64(half* %addr) { 40; CHECK-LABEL: test_extend64: 41 42; CHECK-LIBCALL: callq __gnu_h2f_ieee 43; CHECK-LIBCALL: cvtss2sd 44; CHECK-FP16: vcvtph2ps 45; CHECK-FP16: vcvtss2sd 46 %val16 = load half* %addr 47 %val32 = fpext half %val16 to double 48 ret double %val32 49} 50 51define void @test_trunc32(float %in, half* %addr) { 52; CHECK-LABEL: test_trunc32: 53 54; CHECK-LIBCALL: callq __gnu_f2h_ieee 55; CHECK-FP16: vcvtps2ph 56 %val16 = fptrunc float %in to half 57 store half %val16, half* %addr 58 ret void 59} 60 61define void @test_trunc64(double %in, half* %addr) { 62; CHECK-LABEL: test_trunc64: 63 64; CHECK-LIBCALL: callq __truncdfhf2 65; CHECK-FP16: callq __truncdfhf2 66 %val16 = fptrunc double %in to half 67 store half %val16, half* %addr 68 ret void 69} 70