derek.holloway
7502bf64a4
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77 lines
2.1 KiB
LLVM
77 lines
2.1 KiB
LLVM
; RUN: llc -mtriple=hexagon < %s | FileCheck %s
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; This test validates the following facts for half-precision floating point
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; conversions.
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; Generate correct libcall names for conversion from fp16 to fp32.
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; (__extendhfsf2).
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; The extension from fp16 to fp64 is implicitly handled by __extendhfsf2 and convert_sf2d.
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; (fp16->fp32->fp64).
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; Generate correcct libcall names for conversion from fp32/fp64 to fp16
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; (__truncsfhf2 and __truncdfhf2)
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; Verify that we generate loads and stores of halfword.
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; Validate that we generate correct lib calls to convert fp16
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;CHECK-LABEL: @test1
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;CHECK: jump __extendhfsf2
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;CHECK: r0 = memuh
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define dso_local float @test1(ptr readonly captures(none) %a) local_unnamed_addr #0 {
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entry:
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%0 = load i16, ptr %a, align 2
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%1 = bitcast i16 %0 to half
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%2 = fpext half %1 to float
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ret float %2
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}
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;CHECK-LABEL: @test2
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;CHECK: call __extendhfsf2
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;CHECK: r0 = memuh
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;CHECK: convert_sf2d
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define dso_local double @test2(ptr readonly captures(none) %a) local_unnamed_addr #0 {
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entry:
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%0 = load i16, ptr %a, align 2
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%1 = bitcast i16 %0 to half
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%2 = fpext half %1 to double
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ret double %2
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}
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;CHECK-LABEL: @test3
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;CHECK: call __truncsfhf2
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;CHECK: memh{{.*}}= r0
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define dso_local void @test3(float %src, ptr captures(none) %dst) local_unnamed_addr #0 {
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entry:
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%0 = fptrunc float %src to half
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%1 = bitcast half %0 to i16
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store i16 %1, ptr %dst, align 2
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ret void
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}
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;CHECK-LABEL: @test4
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;CHECK: call __truncdfhf2
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;CHECK: memh{{.*}}= r0
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define dso_local void @test4(double %src, ptr captures(none) %dst) local_unnamed_addr #0 {
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entry:
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%0 = fptrunc double %src to half
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%1 = bitcast half %0 to i16
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store i16 %1, ptr %dst, align 2
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ret void
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}
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;CHECK-LABEL: @test5
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;CHECK: call __extendhfsf2
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;CHECK: call __extendhfsf2
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;CHECK: sfadd
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define dso_local float @test5(ptr readonly captures(none) %a, ptr readonly captures(none) %b) local_unnamed_addr #0 {
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entry:
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%0 = load i16, ptr %a, align 2
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%1 = bitcast i16 %0 to half
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%2 = fpext half %1 to float
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%3 = load i16, ptr %b, align 2
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%4 = bitcast i16 %3 to half
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%5 = fpext half %4 to float
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%add = fadd float %2, %5
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ret float %add
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}
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attributes #0 = { nounwind readonly }
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