https://github.com/RKSimon updated
https://github.com/llvm/llvm-project/pull/78330
>From 8f8917528e30d2ba67f669cfd1a893bc85c21121 Mon Sep 17 00:00:00 2001
From: Ammarguellat
Date: Tue, 16 Jan 2024 11:24:03 -0800
Subject: [PATCH 1/4] Fixed a bug in Smith's algorithm and made sure last
option in command line rules.
---
clang/lib/CodeGen/CGExprComplex.cpp | 8 ++--
clang/lib/Driver/ToolChains/Clang.cpp | 19 ++-
clang/test/CodeGen/cx-complex-range.c | 16
clang/test/Driver/range.c | 7 +++
4 files changed, 39 insertions(+), 11 deletions(-)
diff --git a/clang/lib/CodeGen/CGExprComplex.cpp
b/clang/lib/CodeGen/CGExprComplex.cpp
index e532794b71bdb4a..6fbd8f19eeb50a4 100644
--- a/clang/lib/CodeGen/CGExprComplex.cpp
+++ b/clang/lib/CodeGen/CGExprComplex.cpp
@@ -936,7 +936,7 @@ ComplexPairTy
ComplexExprEmitter::EmitRangeReductionDiv(llvm::Value *LHSr,
llvm::Value *RC = Builder.CreateFMul(CdD, RHSr); // rc
llvm::Value *DpRC = Builder.CreateFAdd(RHSi, RC); // tmp=d+rc
- llvm::Value *T7 = Builder.CreateFMul(LHSr, RC);// ar
+ llvm::Value *T7 = Builder.CreateFMul(LHSr, CdD); // ar
llvm::Value *T8 = Builder.CreateFAdd(T7, LHSi);// ar+b
llvm::Value *DSTFr = Builder.CreateFDiv(T8, DpRC); // (ar+b)/tmp
@@ -978,7 +978,11 @@ ComplexPairTy ComplexExprEmitter::EmitBinDiv(const
BinOpInfo &Op) {
return EmitRangeReductionDiv(LHSr, LHSi, RHSr, RHSi);
else if (Op.FPFeatures.getComplexRange() == LangOptions::CX_Limited)
return EmitAlgebraicDiv(LHSr, LHSi, RHSr, RHSi);
-else if (!CGF.getLangOpts().FastMath) {
+else if (!CGF.getLangOpts().FastMath ||
+ // '-ffast-math' is used in the command line but followed by an
+ // '-fno-cx-limited-range'.
+ (CGF.getLangOpts().FastMath &&
+ Op.FPFeatures.getComplexRange() == LangOptions::CX_Full)) {
LHSi = OrigLHSi;
// If we have a complex operand on the RHS and FastMath is not allowed,
we
// delegate to a libcall to handle all of the complexities and minimize
diff --git a/clang/lib/Driver/ToolChains/Clang.cpp
b/clang/lib/Driver/ToolChains/Clang.cpp
index 9edae3fec91a87f..0c05d1db3960718 100644
--- a/clang/lib/Driver/ToolChains/Clang.cpp
+++ b/clang/lib/Driver/ToolChains/Clang.cpp
@@ -2753,6 +2753,7 @@ static void RenderFloatingPointOptions(const ToolChain
&TC, const Driver &D,
StringRef Float16ExcessPrecision = "";
StringRef BFloat16ExcessPrecision = "";
LangOptions::ComplexRangeKind Range = LangOptions::ComplexRangeKind::CX_Full;
+ std::string ComplexRangeStr = "";
if (const Arg *A = Args.getLastArg(options::OPT_flimited_precision_EQ)) {
CmdArgs.push_back("-mlimit-float-precision");
@@ -2768,24 +2769,24 @@ static void RenderFloatingPointOptions(const ToolChain
&TC, const Driver &D,
case options::OPT_fcx_limited_range: {
EmitComplexRangeDiag(D, Range,
LangOptions::ComplexRangeKind::CX_Limited);
Range = LangOptions::ComplexRangeKind::CX_Limited;
- std::string ComplexRangeStr = RenderComplexRangeOption("limited");
- if (!ComplexRangeStr.empty())
-CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));
+ ComplexRangeStr = RenderComplexRangeOption("limited");
break;
}
case options::OPT_fno_cx_limited_range:
+ EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Full);
Range = LangOptions::ComplexRangeKind::CX_Full;
+ ComplexRangeStr = RenderComplexRangeOption("full");
break;
case options::OPT_fcx_fortran_rules: {
EmitComplexRangeDiag(D, Range,
LangOptions::ComplexRangeKind::CX_Fortran);
Range = LangOptions::ComplexRangeKind::CX_Fortran;
- std::string ComplexRangeStr = RenderComplexRangeOption("fortran");
- if (!ComplexRangeStr.empty())
-CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));
+ ComplexRangeStr = RenderComplexRangeOption("fortran");
break;
}
case options::OPT_fno_cx_fortran_rules:
+ EmitComplexRangeDiag(D, Range, LangOptions::ComplexRangeKind::CX_Full);
Range = LangOptions::ComplexRangeKind::CX_Full;
+ ComplexRangeStr = RenderComplexRangeOption("full");
break;
case options::OPT_ffp_model_EQ: {
// If -ffp-model= is seen, reset to fno-fast-math
@@ -3056,9 +3057,7 @@ static void RenderFloatingPointOptions(const ToolChain
&TC, const Driver &D,
SeenUnsafeMathModeOption = true;
// ffast-math enables fortran rules for complex multiplication and
// division.
- std::string ComplexRangeStr = RenderComplexRangeOption("limited");
- if (!ComplexRangeStr.empty())
-CmdArgs.push_back(Args.MakeArgString(ComplexRangeStr));
+ ComplexRangeStr = RenderComplexRangeOption("limited");
break;
}
case options::OPT_fno_fast_math:
@@ -3215,6 +3214,8 @@ static void RenderFloatingPointOptions(const ToolChain
&TC, const Driver &D,
op