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07e12367b2
A conversion from `pow` to `sqrt` shall not call an `errno`-setting `sqrt` with -//infinity//: the `sqrt` will set `EDOM` where the `pow` call need not. This patch avoids the erroneous (pun not intended) transformation by applying the restrictions discussed in the thread for https://lists.llvm.org/pipermail/llvm-dev/2020-September/145051.html. The existing tests are updated (depending on emphasis in the checks for library calls, avoidance of overlap, and overall coverage): - to add `ninf`, retaining the intended library call, - to use the intrinsic, retaining the use of `select`, or - to expect the replacement to not occur. The following is tested: - The pow intrinsic folds to a `select` instruction to handle -//infinity//. - The pow library call folds, with `ninf`, to `sqrt` without the `select` instruction associated with handling -//infinity//. - The pow library call does not fold to `sqrt` without `ninf`. Reviewed By: spatel Differential Revision: https://reviews.llvm.org/D87877
502 lines
21 KiB
LLVM
502 lines
21 KiB
LLVM
; Test that the pow library call simplifier works correctly.
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;
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; RUN: opt -instcombine -S < %s | FileCheck %s --check-prefixes=CHECK,LIB,ANY
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; RUN: opt -instcombine -S < %s -mtriple=x86_64-apple-macosx10.9 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=arm-apple-ios7.0 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=x86_64-apple-macosx10.8 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=arm-apple-ios6.0 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=x86_64-netbsd | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=arm-apple-tvos9.0 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=arm-apple-watchos2.0 | FileCheck %s --check-prefixes=CHECK,LIB,ANY,CHECK-EXP10
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; rdar://7251832
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; RUN: opt -instcombine -S < %s -mtriple=i386-pc-windows-msvc18 | FileCheck %s --check-prefixes=CHECK,LIB,MSVC,VC32,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=i386-pc-windows-msvc | FileCheck %s --check-prefixes=CHECK,LIB,MSVC,VC51,VC19,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=x86_64-pc-windows-msvc18 | FileCheck %s --check-prefixes=CHECK,LIB,MSVC,VC64,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=x86_64-pc-windows-msvc | FileCheck %s --check-prefixes=CHECK,LIB,MSVC,VC83,VC19,CHECK-NO-EXP10
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; RUN: opt -instcombine -S < %s -mtriple=amdgcn-- | FileCheck %s --check-prefixes=CHECK,NOLIB,CHECK-NO-EXP10
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; NOTE: The readonly attribute on the pow call should be preserved
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; in the cases below where pow is transformed into another function call.
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declare float @powf(float, float) nounwind readonly
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declare float @llvm.pow.f32(float, float)
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declare double @pow(double, double) nounwind readonly
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declare double @llvm.pow.f64(double, double)
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declare <2 x float> @llvm.pow.v2f32(<2 x float>, <2 x float>) nounwind readonly
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declare <2 x double> @llvm.pow.v2f64(<2 x double>, <2 x double>) nounwind readonly
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; Check pow(1.0, x) -> 1.0.
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define float @test_simplify1(float %x) {
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; CHECK-LABEL: @test_simplify1(
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; ANY-NEXT: ret float 1.000000e+00
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; VC32-NEXT: [[POW:%.*]] = call float @powf(float 1.000000e+00, float [[X:%.*]])
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; VC32-NEXT: ret float [[POW]]
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; VC64-NEXT: ret float 1.000000e+00
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; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float 1.000000e+00, float [[X:%.*]])
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; NOLIB-NEXT: ret float [[POW]]
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;
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%retval = call float @powf(float 1.0, float %x)
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ret float %retval
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}
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define <2 x float> @test_simplify1v(<2 x float> %x) {
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; CHECK-LABEL: @test_simplify1v(
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; CHECK-NEXT: ret <2 x float> <float 1.000000e+00, float 1.000000e+00>
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;
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%retval = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 1.0, float 1.0>, <2 x float> %x)
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ret <2 x float> %retval
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}
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define double @test_simplify2(double %x) {
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; CHECK-LABEL: @test_simplify2(
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; LIB-NEXT: ret double 1.000000e+00
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; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double 1.000000e+00, double [[X:%.*]])
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; NOLIB-NEXT: ret double [[POW]]
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;
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%retval = call double @pow(double 1.0, double %x)
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ret double %retval
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}
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define <2 x double> @test_simplify2v(<2 x double> %x) {
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; CHECK-LABEL: @test_simplify2v(
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; CHECK-NEXT: ret <2 x double> <double 1.000000e+00, double 1.000000e+00>
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;
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%retval = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 1.0, double 1.0>, <2 x double> %x)
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ret <2 x double> %retval
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}
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; Check pow(2.0 ** n, x) -> exp2(n * x).
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define float @test_simplify3(float %x) {
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; CHECK-LABEL: @test_simplify3(
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; ANY-NEXT: [[EXP2F:%.*]] = call float @exp2f(float [[X:%.*]])
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; ANY-NEXT: ret float [[EXP2F]]
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; VC32-NEXT: [[POW:%.*]] = call float @powf(float 2.000000e+00, float [[X:%.*]])
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; VC32-NEXT: ret float [[POW]]
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; VC51-NEXT: [[POW:%.*]] = call float @powf(float 2.000000e+00, float [[X:%.*]])
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; VC51-NEXT: ret float [[POW]]
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; VC64-NEXT: [[POW:%.*]] = call float @powf(float 2.000000e+00, float [[X:%.*]])
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; VC64-NEXT: ret float [[POW]]
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; VC83-NEXT: [[EXP2F:%.*]] = call float @exp2f(float [[X:%.*]])
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; VC83-NEXT: ret float [[EXP2F]]
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; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float 2.000000e+00, float [[X:%.*]])
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; NOLIB-NEXT: ret float [[POW]]
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;
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%retval = call float @powf(float 2.0, float %x)
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ret float %retval
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}
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define double @test_simplify3n(double %x) {
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; CHECK-LABEL: @test_simplify3n(
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; ANY-NEXT: [[MUL:%.*]] = fmul double [[X:%.*]], -2.000000e+00
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; ANY-NEXT: [[EXP2:%.*]] = call double @exp2(double [[MUL]])
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; ANY-NEXT: ret double [[EXP2]]
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; VC19-NEXT: [[MUL:%.*]] = fmul double [[X:%.*]], -2.000000e+00
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; VC19-NEXT: [[EXP2:%.*]] = call double @exp2(double [[MUL]])
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; VC19-NEXT: ret double [[EXP2]]
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; VC32-NEXT: [[POW:%.*]] = call double @pow(double 2.500000e-01, double [[X:%.*]])
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; VC32-NEXT: ret double [[POW]]
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; VC64-NEXT: [[POW:%.*]] = call double @pow(double 2.500000e-01, double [[X:%.*]])
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; VC64-NEXT: ret double [[POW]]
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; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double 2.500000e-01, double [[X:%.*]])
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; NOLIB-NEXT: ret double [[POW]]
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;
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%retval = call double @pow(double 0.25, double %x)
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ret double %retval
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}
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define <2 x float> @test_simplify3v(<2 x float> %x) {
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; CHECK-LABEL: @test_simplify3v(
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; ANY-NEXT: [[EXP2:%.*]] = call <2 x float> @llvm.exp2.v2f32(<2 x float> [[X:%.*]])
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; ANY-NEXT: ret <2 x float> [[EXP2]]
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; MSVC-NEXT: [[POW:%.*]] = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 2.000000e+00, float 2.000000e+00>, <2 x float> [[X:%.*]])
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; MSVC-NEXT: ret <2 x float> [[POW]]
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; TODO: should be able to simplify llvm.pow to llvm.exp2 even without libcalls
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; NOLIB-NEXT: [[POW:%.*]] = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 2.000000e+00, float 2.000000e+00>, <2 x float> [[X:%.*]])
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; NOLIB-NEXT: ret <2 x float> [[POW]]
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;
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%retval = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 2.0, float 2.0>, <2 x float> %x)
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ret <2 x float> %retval
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}
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define <2 x double> @test_simplify3vn(<2 x double> %x) {
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; CHECK-LABEL: @test_simplify3vn(
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; ANY-NEXT: [[MUL:%.*]] = fmul <2 x double> [[X:%.*]], <double 2.000000e+00, double 2.000000e+00>
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; ANY-NEXT: [[EXP2:%.*]] = call <2 x double> @llvm.exp2.v2f64(<2 x double> [[MUL]])
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; ANY-NEXT: ret <2 x double> [[EXP2]]
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; MSVC-NEXT: [[POW:%.*]] = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 4.000000e+00, double 4.000000e+00>, <2 x double> [[X:%.*]])
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; MSVC-NEXT: ret <2 x double> [[POW]]
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; TODO: should be able to simplify llvm.pow to llvm.exp2 even without libcalls
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; NOLIB-NEXT: [[POW:%.*]] = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 4.000000e+00, double 4.000000e+00>, <2 x double> [[X:%.*]])
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; NOLIB-NEXT: ret <2 x double> [[POW]]
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;
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%retval = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 4.0, double 4.0>, <2 x double> %x)
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ret <2 x double> %retval
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}
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define double @test_simplify4(double %x) {
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; CHECK-LABEL: @test_simplify4(
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; ANY-NEXT: [[EXP2:%.*]] = call double @exp2(double [[X:%.*]])
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; ANY-NEXT: ret double [[EXP2]]
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; VC19-NEXT: [[EXP2:%.*]] = call double @exp2(double [[X:%.*]])
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; VC19-NEXT: ret double [[EXP2]]
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; VC32-NEXT: [[POW:%.*]] = call double @pow(double 2.000000e+00, double [[X:%.*]])
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; VC32-NEXT: ret double [[POW]]
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; VC64-NEXT: [[POW:%.*]] = call double @pow(double 2.000000e+00, double [[X:%.*]])
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; VC64-NEXT: ret double [[POW]]
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; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double 2.000000e+00, double [[X:%.*]])
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; NOLIB-NEXT: ret double [[POW]]
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;
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%retval = call double @pow(double 2.0, double %x)
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ret double %retval
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}
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define float @test_simplify4n(float %x) {
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; CHECK-LABEL: @test_simplify4n(
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; ANY-NEXT: [[MUL:%.*]] = fmul float [[X:%.*]], 3.000000e+00
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; ANY-NEXT: [[EXP2F:%.*]] = call float @exp2f(float [[MUL]])
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; ANY-NEXT: ret float [[EXP2F]]
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; VC32-NEXT: [[POW:%.*]] = call float @powf(float 8.000000e+00, float [[X:%.*]])
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; VC32-NEXT: ret float [[POW]]
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; VC51-NEXT: [[POW:%.*]] = call float @powf(float 8.000000e+00, float [[X:%.*]])
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; VC51-NEXT: ret float [[POW]]
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; VC64-NEXT: [[POW:%.*]] = call float @powf(float 8.000000e+00, float [[X:%.*]])
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; VC64-NEXT: ret float [[POW]]
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; VC83-NEXT: [[MUL:%.*]] = fmul float [[X:%.*]], 3.000000e+00
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; VC83-NEXT: [[EXP2F:%.*]] = call float @exp2f(float [[MUL]])
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; VC83-NEXT: ret float [[EXP2F]]
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; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float 8.000000e+00, float [[X:%.*]])
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; NOLIB-NEXT: ret float [[POW]]
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;
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%retval = call float @powf(float 8.0, float %x)
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ret float %retval
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}
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define <2 x double> @test_simplify4v(<2 x double> %x) {
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; CHECK-LABEL: @test_simplify4v(
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; ANY-NEXT: [[EXP2:%.*]] = call <2 x double> @llvm.exp2.v2f64(<2 x double> [[X:%.*]])
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; ANY-NEXT: ret <2 x double> [[EXP2]]
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; MSVC-NEXT: [[POW:%.*]] = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 2.000000e+00, double 2.000000e+00>, <2 x double> [[X:%.*]])
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; MSVC-NEXT: ret <2 x double> [[POW]]
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; TODO: should be able to simplify llvm.pow to llvm.exp2 even without libcalls
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; NOLIB-NEXT: [[POW:%.*]] = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 2.000000e+00, double 2.000000e+00>, <2 x double> [[X:%.*]])
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; NOLIB-NEXT: ret <2 x double> [[POW]]
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;
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%retval = call <2 x double> @llvm.pow.v2f64(<2 x double> <double 2.0, double 2.0>, <2 x double> %x)
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ret <2 x double> %retval
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}
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define <2 x float> @test_simplify4vn(<2 x float> %x) {
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; CHECK-LABEL: @test_simplify4vn(
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; ANY-NEXT: [[MUL:%.*]] = fneg <2 x float> [[X:%.*]]
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; ANY-NEXT: [[EXP2:%.*]] = call <2 x float> @llvm.exp2.v2f32(<2 x float> [[MUL]])
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; ANY-NEXT: ret <2 x float> [[EXP2]]
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; MSVC-NEXT: [[POW:%.*]] = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 5.000000e-01, float 5.000000e-01>, <2 x float> [[X:%.*]])
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; MSVC-NEXT: ret <2 x float> [[POW]]
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; TODO: should be able to simplify llvm.pow to llvm.exp2 even without libcalls
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; NOLIB-NEXT: [[POW:%.*]] = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 5.000000e-01, float 5.000000e-01>, <2 x float> [[X:%.*]])
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; NOLIB-NEXT: ret <2 x float> [[POW]]
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;
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%retval = call <2 x float> @llvm.pow.v2f32(<2 x float> <float 0.5, float 0.5>, <2 x float> %x)
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ret <2 x float> %retval
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}
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; Check pow(x, 0.0) -> 1.0.
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define float @test_simplify5(float %x) {
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; CHECK-LABEL: @test_simplify5(
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; ANY-NEXT: ret float 1.000000e+00
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; VC32-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 0.000000e+00)
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; VC32-NEXT: ret float [[POW]]
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; VC51-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 0.000000e+00)
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; VC51-NEXT: ret float [[POW]]
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; VC64-NEXT: ret float 1.000000e+00
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; VC83-NEXT: ret float 1.000000e+00
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; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 0.000000e+00)
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; NOLIB-NEXT: ret float [[POW]]
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;
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%retval = call float @powf(float %x, float 0.0)
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ret float %retval
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}
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define <2 x float> @test_simplify5v(<2 x float> %x) {
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; CHECK-LABEL: @test_simplify5v(
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; CHECK-NEXT: ret <2 x float> <float 1.000000e+00, float 1.000000e+00>
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;
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%retval = call <2 x float> @llvm.pow.v2f32(<2 x float> %x, <2 x float> <float 0.0, float 0.0>)
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ret <2 x float> %retval
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}
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define double @test_simplify6(double %x) {
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; CHECK-LABEL: @test_simplify6(
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; LIB-NEXT: ret double 1.000000e+00
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; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double [[X:%.*]], double 0.000000e+00)
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; NOLIB-NEXT: ret double [[POW]]
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;
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%retval = call double @pow(double %x, double 0.0)
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ret double %retval
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}
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define <2 x double> @test_simplify6v(<2 x double> %x) {
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; CHECK-LABEL: @test_simplify6v(
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; CHECK-NEXT: ret <2 x double> <double 1.000000e+00, double 1.000000e+00>
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;
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%retval = call <2 x double> @llvm.pow.v2f64(<2 x double> %x, <2 x double> <double 0.0, double 0.0>)
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ret <2 x double> %retval
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}
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; Check pow(x, 0.5) -> fabs(sqrt(x)), where x != -infinity.
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define float @powf_libcall_half_ninf(float %x) {
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; CHECK-LABEL: @powf_libcall_half_ninf(
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; ANY-NEXT: [[SQRTF:%.*]] = call ninf float @sqrtf(float [[X:%.*]])
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; ANY-NEXT: [[ABS:%.*]] = call ninf float @llvm.fabs.f32(float [[SQRTF]])
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; ANY-NEXT: ret float [[ABS]]
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; VC32-NEXT: [[POW:%.*]] = call ninf float @powf(float [[X:%.*]], float 5.000000e-01)
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; VC32-NEXT: ret float [[POW]]
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; VC51-NEXT: [[POW:%.*]] = call ninf float @powf(float [[X:%.*]], float 5.000000e-01)
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; VC51-NEXT: ret float [[POW]]
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; VC64-NEXT: [[SQRTF:%.*]] = call ninf float @sqrtf(float [[X:%.*]])
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; VC64-NEXT: [[ABS:%.*]] = call ninf float @llvm.fabs.f32(float [[SQRTF]])
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; VC64-NEXT: ret float [[ABS]]
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; VC83-NEXT: [[SQRTF:%.*]] = call ninf float @sqrtf(float [[X:%.*]])
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; VC83-NEXT: [[ABS:%.*]] = call ninf float @llvm.fabs.f32(float [[SQRTF]])
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; VC83-NEXT: ret float [[ABS]]
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; NOLIB-NEXT: [[POW:%.*]] = call ninf float @powf(float [[X:%.*]], float 5.000000e-01)
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; NOLIB-NEXT: ret float [[POW]]
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;
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%retval = call ninf float @powf(float %x, float 0.5)
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ret float %retval
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}
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; Check pow(x, 0.5) where x may be -infinity does not call a library sqrt function.
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define double @pow_libcall_half_no_FMF(double %x) {
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; CHECK-LABEL: @pow_libcall_half_no_FMF(
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; CHECK-NEXT: [[POW:%.*]] = call double @pow(double [[X:%.*]], double 5.000000e-01)
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; CHECK-NEXT: ret double [[POW]]
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;
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%retval = call double @pow(double %x, double 0.5)
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ret double %retval
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}
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; Check pow(-infinity, 0.5) -> +infinity.
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define float @test_simplify9(float %x) {
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; CHECK-LABEL: @test_simplify9(
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; CHECK-NEXT: ret float 0x7FF0000000000000
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;
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%retval = call float @llvm.pow.f32(float 0xFFF0000000000000, float 0.5)
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ret float %retval
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}
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define double @test_simplify10(double %x) {
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; CHECK-LABEL: @test_simplify10(
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; CHECK-NEXT: ret double 0x7FF0000000000000
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;
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%retval = call double @llvm.pow.f64(double 0xFFF0000000000000, double 0.5)
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ret double %retval
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}
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; Check pow(x, 1.0) -> x.
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define float @test_simplify11(float %x) {
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; CHECK-LABEL: @test_simplify11(
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; ANY-NEXT: ret float [[X:%.*]]
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; VC32-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 1.000000e+00)
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; VC32-NEXT: ret float [[POW]]
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; VC51-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 1.000000e+00)
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; VC51-NEXT: ret float [[POW]]
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; VC64-NEXT: ret float [[X:%.*]]
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|
; VC83-NEXT: ret float [[X:%.*]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 1.000000e+00)
|
|
; NOLIB-NEXT: ret float [[POW]]
|
|
;
|
|
%retval = call float @powf(float %x, float 1.0)
|
|
ret float %retval
|
|
}
|
|
|
|
define <2 x float> @test_simplify11v(<2 x float> %x) {
|
|
; CHECK-LABEL: @test_simplify11v(
|
|
; CHECK-NEXT: ret <2 x float> [[X:%.*]]
|
|
;
|
|
%retval = call <2 x float> @llvm.pow.v2f32(<2 x float> %x, <2 x float> <float 1.0, float 1.0>)
|
|
ret <2 x float> %retval
|
|
}
|
|
|
|
define double @test_simplify12(double %x) {
|
|
; CHECK-LABEL: @test_simplify12(
|
|
; LIB-NEXT: ret double [[X:%.*]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double [[X:%.*]], double 1.000000e+00)
|
|
; NOLIB-NEXT: ret double [[POW]]
|
|
;
|
|
%retval = call double @pow(double %x, double 1.0)
|
|
ret double %retval
|
|
}
|
|
|
|
define <2 x double> @test_simplify12v(<2 x double> %x) {
|
|
; CHECK-LABEL: @test_simplify12v(
|
|
; CHECK-NEXT: ret <2 x double> [[X:%.*]]
|
|
;
|
|
%retval = call <2 x double> @llvm.pow.v2f64(<2 x double> %x, <2 x double> <double 1.0, double 1.0>)
|
|
ret <2 x double> %retval
|
|
}
|
|
|
|
; Check pow(x, 2.0) -> x*x.
|
|
|
|
define float @pow2_strict(float %x) {
|
|
; CHECK-LABEL: @pow2_strict(
|
|
; ANY-NEXT: [[SQUARE:%.*]] = fmul float [[X:%.*]], [[X]]
|
|
; ANY-NEXT: ret float [[SQUARE]]
|
|
; VC32-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; VC32-NEXT: ret float [[POW]]
|
|
; VC51-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; VC51-NEXT: ret float [[POW]]
|
|
; VC64-NEXT: [[SQUARE:%.*]] = fmul float [[X:%.*]], [[X]]
|
|
; VC64-NEXT: ret float [[SQUARE]]
|
|
; VC83-NEXT: [[SQUARE:%.*]] = fmul float [[X:%.*]], [[X]]
|
|
; VC83-NEXT: ret float [[SQUARE]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; NOLIB-NEXT: ret float [[POW]]
|
|
;
|
|
%r = call float @powf(float %x, float 2.0)
|
|
ret float %r
|
|
}
|
|
|
|
define <2 x float> @pow2_strictv(<2 x float> %x) {
|
|
; CHECK-LABEL: @pow2_strictv(
|
|
; CHECK-NEXT: [[SQUARE:%.*]] = fmul <2 x float> [[X:%.*]], [[X]]
|
|
; CHECK-NEXT: ret <2 x float> [[SQUARE]]
|
|
;
|
|
%r = call <2 x float> @llvm.pow.v2f32(<2 x float> %x, <2 x float> <float 2.0, float 2.0>)
|
|
ret <2 x float> %r
|
|
}
|
|
|
|
define double @pow2_double_strict(double %x) {
|
|
; CHECK-LABEL: @pow2_double_strict(
|
|
; LIB-NEXT: [[SQUARE:%.*]] = fmul double [[X:%.*]], [[X]]
|
|
; LIB-NEXT: ret double [[SQUARE]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call double @pow(double [[X:%.*]], double 2.000000e+00)
|
|
; NOLIB-NEXT: ret double [[POW]]
|
|
;
|
|
%r = call double @pow(double %x, double 2.0)
|
|
ret double %r
|
|
}
|
|
|
|
define <2 x double> @pow2_double_strictv(<2 x double> %x) {
|
|
; CHECK-LABEL: @pow2_double_strictv(
|
|
; CHECK-NEXT: [[SQUARE:%.*]] = fmul <2 x double> [[X:%.*]], [[X]]
|
|
; CHECK-NEXT: ret <2 x double> [[SQUARE]]
|
|
;
|
|
%r = call <2 x double> @llvm.pow.v2f64(<2 x double> %x, <2 x double> <double 2.0, double 2.0>)
|
|
ret <2 x double> %r
|
|
}
|
|
|
|
; Don't drop the FMF - PR35601 ( https://bugs.llvm.org/show_bug.cgi?id=35601 )
|
|
|
|
define float @pow2_fast(float %x) {
|
|
; CHECK-LABEL: @pow2_fast(
|
|
; ANY-NEXT: [[SQUARE:%.*]] = fmul fast float [[X:%.*]], [[X]]
|
|
; ANY-NEXT: ret float [[SQUARE]]
|
|
; VC32-NEXT: [[POW:%.*]] = call fast float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; VC32-NEXT: ret float [[POW]]
|
|
; VC51-NEXT: [[POW:%.*]] = call fast float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; VC51-NEXT: ret float [[POW]]
|
|
; VC64-NEXT: [[SQUARE:%.*]] = fmul fast float [[X:%.*]], [[X]]
|
|
; VC64-NEXT: ret float [[SQUARE]]
|
|
; VC83-NEXT: [[SQUARE:%.*]] = fmul fast float [[X:%.*]], [[X]]
|
|
; VC83-NEXT: ret float [[SQUARE]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call fast float @powf(float [[X:%.*]], float 2.000000e+00)
|
|
; NOLIB-NEXT: ret float [[POW]]
|
|
;
|
|
%r = call fast float @powf(float %x, float 2.0)
|
|
ret float %r
|
|
}
|
|
|
|
; Check pow(x, -1.0) -> 1.0/x.
|
|
|
|
define float @pow_neg1_strict(float %x) {
|
|
; CHECK-LABEL: @pow_neg1_strict(
|
|
; ANY-NEXT: [[RECIPROCAL:%.*]] = fdiv float 1.000000e+00, [[X:%.*]]
|
|
; ANY-NEXT: ret float [[RECIPROCAL]]
|
|
; VC32-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float -1.000000e+00)
|
|
; VC32-NEXT: ret float [[POW]]
|
|
; VC51-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float -1.000000e+00)
|
|
; VC51-NEXT: ret float [[POW]]
|
|
; VC64-NEXT: [[RECIPROCAL:%.*]] = fdiv float 1.000000e+00, [[X:%.*]]
|
|
; VC64-NEXT: ret float [[RECIPROCAL]]
|
|
; VC83-NEXT: [[RECIPROCAL:%.*]] = fdiv float 1.000000e+00, [[X:%.*]]
|
|
; VC83-NEXT: ret float [[RECIPROCAL]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call float @powf(float [[X:%.*]], float -1.000000e+00)
|
|
; NOLIB-NEXT: ret float [[POW]]
|
|
;
|
|
%r = call float @powf(float %x, float -1.0)
|
|
ret float %r
|
|
}
|
|
|
|
define <2 x float> @pow_neg1_strictv(<2 x float> %x) {
|
|
; CHECK-LABEL: @pow_neg1_strictv(
|
|
; CHECK-NEXT: [[RECIPROCAL:%.*]] = fdiv <2 x float> <float 1.000000e+00, float 1.000000e+00>, [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x float> [[RECIPROCAL]]
|
|
;
|
|
%r = call <2 x float> @llvm.pow.v2f32(<2 x float> %x, <2 x float> <float -1.0, float -1.0>)
|
|
ret <2 x float> %r
|
|
}
|
|
|
|
define double @pow_neg1_double_fast(double %x) {
|
|
; CHECK-LABEL: @pow_neg1_double_fast(
|
|
; LIB-NEXT: [[RECIPROCAL:%.*]] = fdiv fast double 1.000000e+00, [[X:%.*]]
|
|
; LIB-NEXT: ret double [[RECIPROCAL]]
|
|
; NOLIB-NEXT: [[POW:%.*]] = call fast double @pow(double [[X:%.*]], double -1.000000e+00)
|
|
; NOLIB-NEXT: ret double [[POW]]
|
|
;
|
|
%r = call fast double @pow(double %x, double -1.0)
|
|
ret double %r
|
|
}
|
|
|
|
define <2 x double> @pow_neg1_double_fastv(<2 x double> %x) {
|
|
; CHECK-LABEL: @pow_neg1_double_fastv(
|
|
; CHECK-NEXT: [[RECIPROCAL:%.*]] = fdiv fast <2 x double> <double 1.000000e+00, double 1.000000e+00>, [[X:%.*]]
|
|
; CHECK-NEXT: ret <2 x double> [[RECIPROCAL]]
|
|
;
|
|
%r = call fast <2 x double> @llvm.pow.v2f64(<2 x double> %x, <2 x double> <double -1.0, double -1.0>)
|
|
ret <2 x double> %r
|
|
}
|
|
|
|
define double @pow_intrinsic_half_no_FMF(double %x) {
|
|
; CHECK-LABEL: @pow_intrinsic_half_no_FMF(
|
|
; CHECK-NEXT: [[SQRT:%.*]] = call double @llvm.sqrt.f64(double [[X:%.*]])
|
|
; CHECK-NEXT: [[ABS:%.*]] = call double @llvm.fabs.f64(double [[SQRT]])
|
|
; CHECK-NEXT: [[ISINF:%.*]] = fcmp oeq double [[X]], 0xFFF0000000000000
|
|
; CHECK-NEXT: [[TMP1:%.*]] = select i1 [[ISINF]], double 0x7FF0000000000000, double [[ABS]]
|
|
; CHECK-NEXT: ret double [[TMP1]]
|
|
;
|
|
%retval = call double @llvm.pow.f64(double %x, double 0.5)
|
|
ret double %retval
|
|
}
|
|
|
|
; Check pow(10.0, x) -> __exp10(x) on OS X 10.9+ and iOS 7.0+.
|
|
|
|
define float @test_simplify18(float %x) {
|
|
; CHECK-LABEL: @test_simplify18(
|
|
; CHECK-EXP10-NEXT: [[__EXP10F:%.*]] = call float @__exp10f(float [[X:%.*]])
|
|
; CHECK-EXP10-NEXT: ret float [[__EXP10F]]
|
|
; CHECK-NO-EXP10-NEXT: [[RETVAL:%.*]] = call float @powf(float 1.000000e+01, float [[X:%.*]])
|
|
; CHECK-NO-EXP10-NEXT: ret float [[RETVAL]]
|
|
;
|
|
%retval = call float @powf(float 10.0, float %x)
|
|
ret float %retval
|
|
}
|
|
|
|
define double @test_simplify19(double %x) {
|
|
; CHECK-LABEL: @test_simplify19(
|
|
; CHECK-EXP10-NEXT: [[__EXP10:%.*]] = call double @__exp10(double [[X:%.*]])
|
|
; CHECK-EXP10-NEXT: ret double [[__EXP10]]
|
|
; CHECK-NO-EXP10-NEXT: [[RETVAL:%.*]] = call double @pow(double 1.000000e+01, double [[X:%.*]])
|
|
; CHECK-NO-EXP10-NEXT: ret double [[RETVAL]]
|
|
;
|
|
%retval = call double @pow(double 10.0, double %x)
|
|
ret double %retval
|
|
}
|