[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
llvm-svn: 365866
diff --git a/clang/lib/Basic/Targets/PPC.cpp b/clang/lib/Basic/Targets/PPC.cpp
index b052ef4..bd0ae60 100644
--- a/clang/lib/Basic/Targets/PPC.cpp
+++ b/clang/lib/Basic/Targets/PPC.cpp
@@ -465,6 +465,8 @@
if (HasAltivec)
Opts.AltiVec = 1;
TargetInfo::adjust(Opts);
+ if (LongDoubleFormat != &llvm::APFloat::IEEEdouble())
+ LongDoubleFormat = &llvm::APFloat::PPCDoubleDouble();
}
ArrayRef<Builtin::Info> PPCTargetInfo::getTargetBuiltins() const {
diff --git a/clang/lib/Basic/Targets/X86.h b/clang/lib/Basic/Targets/X86.h
index c0dfc81..588b6d3 100644
--- a/clang/lib/Basic/Targets/X86.h
+++ b/clang/lib/Basic/Targets/X86.h
@@ -133,6 +133,10 @@
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 @@
: LinuxTargetInfo<X86_64TargetInfo>(Triple, Opts) {
LongDoubleFormat = &llvm::APFloat::IEEEquad();
}
-
- const char *getLongDoubleMangling() const override { return "g"; }
};
} // namespace targets
} // namespace clang