r365866 - [X86][PowerPC] Support -mlong-double-128
Fangrui Song via cfe-commits
cfe-commits at lists.llvm.org
Thu Jul 11 19:32:16 PDT 2019
Author: maskray
Date: Thu Jul 11 19:32:15 2019
New Revision: 365866
URL: http://llvm.org/viewvc/llvm-project?rev=365866&view=rev
Log:
[X86][PowerPC] Support -mlong-double-128
This patch makes the driver option -mlong-double-128 available for X86
and PowerPC. The CC1 option -mlong-double-128 is available on all targets
for users to test on unsupported targets.
On PowerPC, -mlong-double-128 uses the IBM extended double format
because we don't support -mabi=ieeelongdouble yet (D64283).
Reviewed By: rnk
Differential Revision: https://reviews.llvm.org/D64277
Added:
cfe/trunk/test/Driver/mlong-double-128.c
Modified:
cfe/trunk/include/clang/Driver/Options.td
cfe/trunk/lib/Basic/TargetInfo.cpp
cfe/trunk/lib/Basic/Targets/PPC.cpp
cfe/trunk/lib/Basic/Targets/X86.h
cfe/trunk/lib/Driver/ToolChains/Clang.cpp
cfe/trunk/lib/Frontend/CompilerInvocation.cpp
cfe/trunk/test/CodeGen/ppc64-long-double.cpp
cfe/trunk/test/CodeGen/x86-long-double.cpp
Modified: cfe/trunk/include/clang/Driver/Options.td
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/include/clang/Driver/Options.td?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/include/clang/Driver/Options.td (original)
+++ cfe/trunk/include/clang/Driver/Options.td Thu Jul 11 19:32:15 2019
@@ -2025,6 +2025,8 @@ def mlong_calls : Flag<["-"], "mlong-cal
HelpText<"Generate branches with extended addressability, usually via indirect jumps.">;
def mlong_double_64 : Flag<["-"], "mlong-double-64">, Group<f_Group>, Flags<[CC1Option]>,
HelpText<"Force long double to be 64 bits">;
+def mlong_double_128 : Flag<["-"], "mlong-double-128">, Group<f_Group>, Flags<[CC1Option]>,
+ HelpText<"Force long double to be 128 bits">;
def mno_long_calls : Flag<["-"], "mno-long-calls">, Group<m_Group>,
HelpText<"Restore the default behaviour of not generating long calls">;
def mexecute_only : Flag<["-"], "mexecute-only">, Group<m_arm_Features_Group>,
Modified: cfe/trunk/lib/Basic/TargetInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/TargetInfo.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/TargetInfo.cpp (original)
+++ cfe/trunk/lib/Basic/TargetInfo.cpp Thu Jul 11 19:32:15 2019
@@ -373,10 +373,15 @@ void TargetInfo::adjust(LangOptions &Opt
LongDoubleFormat = &llvm::APFloat::IEEEquad();
}
- if (Opts.LongDoubleSize && Opts.LongDoubleSize == DoubleWidth) {
- LongDoubleWidth = DoubleWidth;
- LongDoubleAlign = DoubleAlign;
- LongDoubleFormat = DoubleFormat;
+ if (Opts.LongDoubleSize) {
+ if (Opts.LongDoubleSize == DoubleWidth) {
+ LongDoubleWidth = DoubleWidth;
+ LongDoubleAlign = DoubleAlign;
+ LongDoubleFormat = DoubleFormat;
+ } else if (Opts.LongDoubleSize == 128) {
+ LongDoubleWidth = LongDoubleAlign = 128;
+ LongDoubleFormat = &llvm::APFloat::IEEEquad();
+ }
}
if (Opts.NewAlignOverride)
Modified: cfe/trunk/lib/Basic/Targets/PPC.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/PPC.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/PPC.cpp (original)
+++ cfe/trunk/lib/Basic/Targets/PPC.cpp Thu Jul 11 19:32:15 2019
@@ -465,6 +465,8 @@ void PPCTargetInfo::adjust(LangOptions &
if (HasAltivec)
Opts.AltiVec = 1;
TargetInfo::adjust(Opts);
+ if (LongDoubleFormat != &llvm::APFloat::IEEEdouble())
+ LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble();
}
ArrayRef<Builtin::Info> PPCTargetInfo::getTargetBuiltins() const {
Modified: cfe/trunk/lib/Basic/Targets/X86.h
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Basic/Targets/X86.h?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/lib/Basic/Targets/X86.h (original)
+++ cfe/trunk/lib/Basic/Targets/X86.h Thu Jul 11 19:32:15 2019
@@ -133,6 +133,10 @@ public:
LongDoubleFormat = &llvm::APFloat::x87DoubleExtended();
}
+ const char *getLongDoubleMangling() const override {
+ return LongDoubleFormat == &llvm::APFloat::IEEEquad() ? "g" : "e";
+ }
+
unsigned getFloatEvalMethod() const override {
// X87 evaluates with 80 bits "long double" precision.
return SSELevel == NoSSE ? 2 : 0;
@@ -845,8 +849,6 @@ public:
: LinuxTargetInfo<X86_64TargetInfo>(Triple, Opts) {
LongDoubleFormat = &llvm::APFloat::IEEEquad();
}
-
- const char *getLongDoubleMangling() const override { return "g"; }
};
} // namespace targets
} // namespace clang
Modified: cfe/trunk/lib/Driver/ToolChains/Clang.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Driver/ToolChains/Clang.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/lib/Driver/ToolChains/Clang.cpp (original)
+++ cfe/trunk/lib/Driver/ToolChains/Clang.cpp Thu Jul 11 19:32:15 2019
@@ -4012,15 +4012,15 @@ void Clang::ConstructJob(Compilation &C,
RenderFloatingPointOptions(TC, D, OFastEnabled, Args, CmdArgs);
- if (Arg *A = Args.getLastArg(options::OPT_mlong_double_64)) {
+ if (Arg *A = Args.getLastArg(options::OPT_mlong_double_64,
+ options::OPT_mlong_double_128)) {
if (TC.getArch() == llvm::Triple::x86 ||
TC.getArch() == llvm::Triple::x86_64 ||
- TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64()) {
- CmdArgs.push_back("-mlong-double-64");
- } else {
+ TC.getArch() == llvm::Triple::ppc || TC.getTriple().isPPC64())
+ A->render(Args, CmdArgs);
+ else
D.Diag(diag::err_drv_unsupported_opt_for_target)
<< A->getAsString(Args) << TripleStr;
- }
}
// Decide whether to use verbose asm. Verbose assembly is the default on
Modified: cfe/trunk/lib/Frontend/CompilerInvocation.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/lib/Frontend/CompilerInvocation.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/lib/Frontend/CompilerInvocation.cpp (original)
+++ cfe/trunk/lib/Frontend/CompilerInvocation.cpp Thu Jul 11 19:32:15 2019
@@ -2742,7 +2742,9 @@ static void ParseLangArgs(LangOptions &O
Opts.PackStruct = getLastArgIntValue(Args, OPT_fpack_struct_EQ, 0, Diags);
Opts.MaxTypeAlign = getLastArgIntValue(Args, OPT_fmax_type_align_EQ, 0, Diags);
Opts.AlignDouble = Args.hasArg(OPT_malign_double);
- Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_64) ? 64 : 0;
+ Opts.LongDoubleSize = Args.hasArg(OPT_mlong_double_128)
+ ? 128
+ : Args.hasArg(OPT_mlong_double_64) ? 64 : 0;
Opts.PICLevel = getLastArgIntValue(Args, OPT_pic_level, 0, Diags);
Opts.ROPI = Args.hasArg(OPT_fropi);
Opts.RWPI = Args.hasArg(OPT_frwpi);
Modified: cfe/trunk/test/CodeGen/ppc64-long-double.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/ppc64-long-double.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/ppc64-long-double.cpp (original)
+++ cfe/trunk/test/CodeGen/ppc64-long-double.cpp Thu Jul 11 19:32:15 2019
@@ -2,8 +2,11 @@
// RUN: FileCheck --check-prefix=FP64 %s
// RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm -o - %s -mlong-double-64 | \
// RUN: FileCheck --check-prefix=FP64 %s
+
// RUN: %clang_cc1 -triple powerpc64-linux-gnu -emit-llvm -o - %s | \
// RUN: FileCheck --check-prefix=IBM128 %s
+// RUN: %clang_cc1 -triple powerpc64-linux-musl -emit-llvm -o - -mlong-double-128 %s | \
+// RUN: FileCheck --check-prefix=IBM128 %s
long double x = 0;
int size = sizeof(x);
Modified: cfe/trunk/test/CodeGen/x86-long-double.cpp
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/CodeGen/x86-long-double.cpp?rev=365866&r1=365865&r2=365866&view=diff
==============================================================================
--- cfe/trunk/test/CodeGen/x86-long-double.cpp (original)
+++ cfe/trunk/test/CodeGen/x86-long-double.cpp Thu Jul 11 19:32:15 2019
@@ -16,6 +16,15 @@
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-apple-darwin -mlong-double-64 | \
// RUN: FileCheck --check-prefixes=FP64,FP64-X64 %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686 -mlong-double-128 | \
+// RUN: FileCheck --check-prefix=FP128 %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686-apple-darwin -mlong-double-128 | \
+// RUN: FileCheck --check-prefix=FP128 %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64 -mlong-double-128 | \
+// RUN: FileCheck --check-prefix=FP128 %s
+// RUN: %clang_cc1 %s -emit-llvm -o - -triple=x86_64-apple-darwin -mlong-double-128 | \
+// RUN: FileCheck --check-prefix=FP128 %s
+
// Check -malign-double increases the alignment from 4 to 8 on x86-32.
// RUN: %clang_cc1 %s -emit-llvm -o - -triple=i686 -mlong-double-64 \
// RUN: -malign-double | FileCheck --check-prefixes=FP64,FP64-X64 %s
@@ -37,7 +46,11 @@ int size = sizeof(x);
// FP64-X64: @x = global double {{.*}}, align 8
// FP64-X64: @size = global i32 8
+// FP128: @x = global fp128 {{.*}}, align 16
+// FP128: @size = global i32 16
+
long double foo(long double d) { return d; }
// FP64: double @_Z3fooe(double %d)
// FP80: x86_fp80 @_Z3fooe(x86_fp80 %d)
+// FP128: fp128 @_Z3foog(fp128 %d)
Added: cfe/trunk/test/Driver/mlong-double-128.c
URL: http://llvm.org/viewvc/llvm-project/cfe/trunk/test/Driver/mlong-double-128.c?rev=365866&view=auto
==============================================================================
--- cfe/trunk/test/Driver/mlong-double-128.c (added)
+++ cfe/trunk/test/Driver/mlong-double-128.c Thu Jul 11 19:32:15 2019
@@ -0,0 +1,11 @@
+// RUN: %clang -target powerpc-linux-musl -c -### %s -mlong-double-128 2>&1 | FileCheck %s
+// RUN: %clang -target powerpc64-pc-freebsd12 -c -### %s -mlong-double-128 2>&1 | FileCheck %s
+// RUN: %clang -target powerpc64le-linux-musl -c -### %s -mlong-double-128 2>&1 | FileCheck %s
+// RUN: %clang -target i686-linux-gnu -c -### %s -mlong-double-128 2>&1 | FileCheck %s
+// RUN: %clang -target x86_64-linux-musl -c -### %s -mlong-double-128 2>&1 | FileCheck %s
+
+// CHECK: "-mlong-double-128"
+
+// RUN: %clang -target aarch64 -c -### %s -mlong-double-128 2>&1 | FileCheck --check-prefix=ERR %s
+
+// ERR: error: unsupported option '-mlong-double-128' for target 'aarch64'
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