From 11cb39c5fc52e59c155be9b8fedbd114a596891b Mon Sep 17 00:00:00 2001 From: Fangrui Song Date: Tue, 9 Jul 2019 00:27:43 +0000 Subject: [X86][PPC] Support -mlong-double-64 -mlong-double-64 is supported on some ports of gcc (i386, x86_64, and ppc{32,64}). On many other targets, there will be an error: error: unrecognized command line option '-mlong-double-64' This patch makes the driver option -mlong-double-64 available for x86 and ppc. The CC1 option -mlong-double-64 is available on all targets for users to test on unsupported targets. LongDoubleSize is added as a VALUE_LANGOPT so that the option can be shared with -mlong-double-128 when we support it in clang. Also, make powerpc*-linux-musl default to use 64-bit long double. It is currently the only supported ABI on musl and is also how people configure powerpc*-linux-musl-gcc. Reviewed By: rnk Differential Revision: https://reviews.llvm.org/D64067 llvm-svn: 365412 --- clang/lib/Basic/TargetInfo.cpp | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'clang/lib/Basic/TargetInfo.cpp') diff --git a/clang/lib/Basic/TargetInfo.cpp b/clang/lib/Basic/TargetInfo.cpp index 5a75b857c21..43ab77289b1 100644 --- a/clang/lib/Basic/TargetInfo.cpp +++ b/clang/lib/Basic/TargetInfo.cpp @@ -373,6 +373,12 @@ void TargetInfo::adjust(LangOptions &Opts) { LongDoubleFormat = &llvm::APFloat::IEEEquad(); } + if (Opts.LongDoubleSize && Opts.LongDoubleSize == DoubleWidth) { + LongDoubleWidth = DoubleWidth; + LongDoubleAlign = DoubleAlign; + LongDoubleFormat = DoubleFormat; + } + if (Opts.NewAlignOverride) NewAlign = Opts.NewAlignOverride * getCharWidth(); -- cgit v1.2.3