diff options
Diffstat (limited to 'test/CodeGen/X86/fast-isel-double-half-convertion.ll')
| -rw-r--r-- | test/CodeGen/X86/fast-isel-double-half-convertion.ll | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/test/CodeGen/X86/fast-isel-double-half-convertion.ll b/test/CodeGen/X86/fast-isel-double-half-convertion.ll new file mode 100644 index 0000000..ade867b --- /dev/null +++ b/test/CodeGen/X86/fast-isel-double-half-convertion.ll @@ -0,0 +1,23 @@ +; RUN: llc -fast-isel -fast-isel-abort -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s + +; XFAIL: * + +; In the future, we might want to teach fast-isel how to expand a double-to-half +; conversion into a double-to-float conversion immediately followed by a +; float-to-half conversion. For now, fast-isel is expected to fail. + +define double @test_fp16_to_fp64(i32 %a) { +entry: + %0 = trunc i32 %a to i16 + %1 = call double @llvm.convert.from.fp16.f64(i16 %0) + ret float %0 +} + +define i16 @test_fp64_to_fp16(double %a) { +entry: + %0 = call i16 @llvm.convert.to.fp16.f64(double %a) + ret i16 %0 +} + +declare i16 @llvm.convert.to.fp16.f64(double) +declare double @llvm.convert.from.fp16.f64(i16) |