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[Hexagon] Omit calls to specialized {float,fix} routines
These were introduced in 1213a7a (Hexagon backend support, 2011-12-12) but they aren't present in libclangrt.builtins-hexagon. The generic versions of these functions are present in the builtins, though. So it should suffice to call those instead.
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‎llvm/lib/Target/Hexagon/HexagonISelLowering.cpp

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@@ -1860,13 +1860,6 @@ HexagonTargetLowering::HexagonTargetLowering(const TargetMachine &TM,
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setLibcallName(RTLIB::UREM_I32, "__hexagon_umodsi3");
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setLibcallName(RTLIB::UREM_I64, "__hexagon_umoddi3");
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setLibcallName(RTLIB::SINTTOFP_I128_F64, "__hexagon_floattidf");
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setLibcallName(RTLIB::SINTTOFP_I128_F32, "__hexagon_floattisf");
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setLibcallName(RTLIB::FPTOUINT_F32_I128, "__hexagon_fixunssfti");
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setLibcallName(RTLIB::FPTOUINT_F64_I128, "__hexagon_fixunsdfti");
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setLibcallName(RTLIB::FPTOSINT_F32_I128, "__hexagon_fixsfti");
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setLibcallName(RTLIB::FPTOSINT_F64_I128, "__hexagon_fixdfti");
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// This is the only fast library function for sqrtd.
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if (FastMath)
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setLibcallName(RTLIB::SQRT_F64, "__hexagon_fast2_sqrtdf2");

‎llvm/test/CodeGen/Hexagon/i128-fpconv-strict.ll

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; RUN: llc < %s -mtriple=hexagon-unknown-CHECK-musl \
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; RUN: | FileCheck %s -check-prefix=CHECK
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define i64 @double_to_i128(double %d) nounwind strictfp {
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; CHECK-LABEL: double_to_i128:
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; CHECK: // %bb.0:
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; CHECK: call __fixdfti
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; CHECK: dealloc_return
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%1 = tail call i128 @llvm.experimental.constrained.fptosi.i128.f64(double %d, metadata !"fpexcept.strict")
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%2 = trunc i128 %1 to i64
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ret i64 %2
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}
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define i64 @double_to_ui128(double %d) nounwind strictfp {
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; CHECK-LABEL: double_to_ui128:
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; CHECK: // %bb.0:
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; CHECK: call __fixunsdfti
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; CHECK: dealloc_return
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%1 = tail call i128 @llvm.experimental.constrained.fptoui.i128.f64(double %d, metadata !"fpexcept.strict")
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%2 = trunc i128 %1 to i64
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ret i64 %2
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}
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define i64 @float_to_i128(float %d) nounwind strictfp {
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; CHECK-LABEL: float_to_i128:
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; CHECK: // %bb.0:
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; CHECK: call __fixsfti
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; CHECK: dealloc_return
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%1 = tail call i128 @llvm.experimental.constrained.fptosi.i128.f32(float %d, metadata !"fpexcept.strict")
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%2 = trunc i128 %1 to i64
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ret i64 %2
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}
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define i64 @float_to_ui128(float %d) nounwind strictfp {
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; CHECK-LABEL: float_to_ui128:
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; CHECK: // %bb.0:
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; CHECK: call __fixunssfti
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; CHECK: dealloc_return
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%1 = tail call i128 @llvm.experimental.constrained.fptoui.i128.f32(float %d, metadata !"fpexcept.strict")
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%2 = trunc i128 %1 to i64
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ret i64 %2
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}
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define i64 @longdouble_to_i128(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: longdouble_to_i128:
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; CHECK: // %bb.0:
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; CHECK: call __fixxfti
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; CHECK: dealloc_return
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%2 = load x86_fp80, ptr %0, align 16
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%3 = tail call i128 @llvm.experimental.constrained.fptosi.i128.f80(x86_fp80 %2, metadata !"fpexcept.strict")
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%4 = trunc i128 %3 to i64
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ret i64 %4
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}
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define i64 @longdouble_to_ui128(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: longdouble_to_ui128:
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; CHECK: // %bb.0:
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; CHECK: call __fixunsxfti
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; CHECK: dealloc_return
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%2 = load x86_fp80, ptr %0, align 16
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%3 = tail call i128 @llvm.experimental.constrained.fptoui.i128.f80(x86_fp80 %2, metadata !"fpexcept.strict")
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%4 = trunc i128 %3 to i64
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ret i64 %4
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}
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define double @i128_to_double(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: i128_to_double:
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; CHECK: // %bb.0:
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; CHECK: call __floattidf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call double @llvm.experimental.constrained.sitofp.f64.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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ret double %3
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}
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define double @ui128_to_double(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: ui128_to_double:
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; CHECK: // %bb.0:
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; CHECK: call __floatuntidf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call double @llvm.experimental.constrained.uitofp.f64.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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ret double %3
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}
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define float @i128_to_float(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: i128_to_float:
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; CHECK: // %bb.0:
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; CHECK: call __floattisf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call float @llvm.experimental.constrained.sitofp.f32.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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ret float %3
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}
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define float @ui128_to_float(ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: ui128_to_float:
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; CHECK: // %bb.0:
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; CHECK: call __floatuntisf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call float @llvm.experimental.constrained.uitofp.f32.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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ret float %3
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}
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define void @i128_to_longdouble(ptr noalias nocapture sret(x86_fp80) align 16 %agg.result, ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: i128_to_longdouble:
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; CHECK: // %bb.0:
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; CHECK: call __floattixf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call x86_fp80 @llvm.experimental.constrained.sitofp.f80.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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store x86_fp80 %3, ptr %agg.result, align 16
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ret void
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}
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define void @ui128_to_longdouble(ptr noalias nocapture sret(x86_fp80) align 16 %agg.result, ptr nocapture readonly %0) nounwind strictfp {
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; CHECK-LABEL: ui128_to_longdouble:
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; CHECK: // %bb.0:
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; CHECK: call __floatuntixf
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; CHECK: dealloc_return
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%2 = load i128, ptr %0, align 16
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%3 = tail call x86_fp80 @llvm.experimental.constrained.uitofp.f80.i128(i128 %2, metadata !"round.dynamic", metadata !"fpexcept.strict")
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store x86_fp80 %3, ptr %agg.result, align 16
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ret void
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}
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declare i128 @llvm.experimental.constrained.fptosi.i128.f64(double, metadata)
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declare i128 @llvm.experimental.constrained.fptoui.i128.f64(double, metadata)
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declare i128 @llvm.experimental.constrained.fptosi.i128.f32(float, metadata)
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declare i128 @llvm.experimental.constrained.fptoui.i128.f32(float, metadata)
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declare i128 @llvm.experimental.constrained.fptosi.i128.f80(x86_fp80, metadata)
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declare i128 @llvm.experimental.constrained.fptoui.i128.f80(x86_fp80, metadata)
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declare double @llvm.experimental.constrained.sitofp.f64.i128(i128, metadata, metadata)
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declare double @llvm.experimental.constrained.uitofp.f64.i128(i128, metadata, metadata)
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declare float @llvm.experimental.constrained.sitofp.f32.i128(i128, metadata, metadata)
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declare float @llvm.experimental.constrained.uitofp.f32.i128(i128, metadata, metadata)
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declare x86_fp80 @llvm.experimental.constrained.sitofp.f80.i128(i128, metadata, metadata)
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declare x86_fp80 @llvm.experimental.constrained.uitofp.f80.i128(i128, metadata, metadata)

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