2015-02-28 02:32:11 +08:00
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; RUN: llc -fast-isel -fast-isel-abort=1 -mtriple=x86_64-unknown-unknown -mattr=+f16c < %s
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2015-02-21 03:37:14 +08:00
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; XFAIL: *
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; In the future, we might want to teach fast-isel how to expand a double-to-half
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; conversion into a double-to-float conversion immediately followed by a
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; float-to-half conversion. For now, fast-isel is expected to fail.
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define double @test_fp16_to_fp64(i32 %a) {
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entry:
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%0 = trunc i32 %a to i16
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%1 = call double @llvm.convert.from.fp16.f64(i16 %0)
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ret float %0
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}
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define i16 @test_fp64_to_fp16(double %a) {
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entry:
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%0 = call i16 @llvm.convert.to.fp16.f64(double %a)
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ret i16 %0
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}
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declare i16 @llvm.convert.to.fp16.f64(double)
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declare double @llvm.convert.from.fp16.f64(i16)
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