a1beb61940
This optimization already exists, but for the libcall versions of these functions and not for their intrinsic form. Solves https://github.com/llvm/llvm-project/issues/139044. There are probably more opportunities for other intrinsics, because the switch-case in `LibCallSimplifier::optimizeCall` covers only `pow`, `exp2`, `log`, `log2`, `log10`, `sqrt`, `memset`, `memcpy` and `memmove`.
70 lines
2.6 KiB
LLVM
70 lines
2.6 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes=instcombine -S | FileCheck %s --check-prefixes=ANY,NO-FLOAT-SHRINK
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; RUN: opt < %s -passes=instcombine -enable-double-float-shrink -S | FileCheck %s --check-prefixes=ANY,DO-FLOAT-SHRINK
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declare double @llvm.cos.f64(double)
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declare float @llvm.cos.f32(float)
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declare double @llvm.sin.f64(double)
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declare float @llvm.sin.f32(float)
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; cos -> cosf
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define float @cos_no_fastmath(float %f) {
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; NO-FLOAT-SHRINK-LABEL: @cos_no_fastmath(
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; NO-FLOAT-SHRINK-NEXT: [[D:%.*]] = fpext float [[F:%.*]] to double
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; NO-FLOAT-SHRINK-NEXT: [[RESULT:%.*]] = call double @llvm.cos.f64(double [[D]])
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; NO-FLOAT-SHRINK-NEXT: [[TRUNCATED_RESULT:%.*]] = fptrunc double [[RESULT]] to float
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; NO-FLOAT-SHRINK-NEXT: ret float [[TRUNCATED_RESULT]]
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;
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; DO-FLOAT-SHRINK-LABEL: @cos_no_fastmath(
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; DO-FLOAT-SHRINK-NEXT: [[TMP1:%.*]] = call float @llvm.cos.f32(float [[F:%.*]])
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; DO-FLOAT-SHRINK-NEXT: ret float [[TMP1]]
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;
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%d = fpext float %f to double
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%result = call double @llvm.cos.f64(double %d)
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%truncated_result = fptrunc double %result to float
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ret float %truncated_result
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}
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define float @cos_fastmath(float %f) {
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; ANY-LABEL: @cos_fastmath(
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; ANY-NEXT: [[TMP1:%.*]] = call fast float @llvm.cos.f32(float [[F:%.*]])
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; ANY-NEXT: ret float [[TMP1]]
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;
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%d = fpext float %f to double
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%result = call fast double @llvm.cos.f64(double %d)
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%truncated_result = fptrunc double %result to float
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ret float %truncated_result
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}
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; sin -> sinf
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define float @sin_no_fastmath(float %f) {
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; NO-FLOAT-SHRINK-LABEL: @sin_no_fastmath(
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; NO-FLOAT-SHRINK-NEXT: [[D:%.*]] = fpext float [[F:%.*]] to double
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; NO-FLOAT-SHRINK-NEXT: [[RESULT:%.*]] = call double @llvm.sin.f64(double [[D]])
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; NO-FLOAT-SHRINK-NEXT: [[TRUNCATED_RESULT:%.*]] = fptrunc double [[RESULT]] to float
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; NO-FLOAT-SHRINK-NEXT: ret float [[TRUNCATED_RESULT]]
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;
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; DO-FLOAT-SHRINK-LABEL: @sin_no_fastmath(
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; DO-FLOAT-SHRINK-NEXT: [[TMP1:%.*]] = call float @llvm.sin.f32(float [[F:%.*]])
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; DO-FLOAT-SHRINK-NEXT: ret float [[TMP1]]
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;
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%d = fpext float %f to double
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%result = call double @llvm.sin.f64(double %d)
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%truncated_result = fptrunc double %result to float
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ret float %truncated_result
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}
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define float @sin_fastmath(float %f) {
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; ANY-LABEL: @sin_fastmath(
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; ANY-NEXT: [[TMP1:%.*]] = call fast float @llvm.sin.f32(float [[F:%.*]])
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; ANY-NEXT: ret float [[TMP1]]
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;
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%d = fpext float %f to double
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%result = call fast double @llvm.sin.f64(double %d)
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%truncated_result = fptrunc double %result to float
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ret float %truncated_result
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}
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