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1; RUN: llc -fast-isel -fast-isel-abort=1 -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s2 3; XFAIL: *4 5; In the future, we might want to teach fast-isel how to expand a double-to-half6; conversion into a double-to-float conversion immediately followed by a7; float-to-half conversion. For now, fast-isel is expected to fail.8 9define double @test_fp16_to_fp64(i32 %a) {10entry:11 %0 = trunc i32 %a to i1612 %1 = call double @llvm.convert.from.fp16.f64(i16 %0)13 ret float %014}15 16define i16 @test_fp64_to_fp16(double %a) {17entry:18 %0 = call i16 @llvm.convert.to.fp16.f64(double %a)19 ret i16 %020}21 22declare i16 @llvm.convert.to.fp16.f64(double)23declare double @llvm.convert.from.fp16.f64(i16)24