From d7177d2007477e52d9a6b1d038da735f408dbe37 Mon Sep 17 00:00:00 2001 From: Andrey Bokhanko Date: Mon, 2 Nov 2015 09:54:17 +0000 Subject: [PATCH] [x86] Front-end part of MCU psABI support This patch implements two things in front-end for MCU psABI support: 1) "long double type is the same as double." 2) "New predefined C/C++ pre-processor symbols: iamcu and iamcu__. Differential Revision: http://reviews.llvm.org/D14205 git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@251786 91177308-0d34-0410-b5e6-96231b3b80d8 --- lib/Basic/Targets.cpp | 8 +++++++- test/CodeGen/x86_32-arguments-iamcu.c | 4 ++++ test/Preprocessor/elfiamcu-predefines.c | 5 +++++ 3 files changed, 16 insertions(+), 1 deletion(-) create mode 100644 test/Preprocessor/elfiamcu-predefines.c diff --git a/lib/Basic/Targets.cpp b/lib/Basic/Targets.cpp index 2d41d7f348..70fa6b3f1b 100644 --- a/lib/Basic/Targets.cpp +++ b/lib/Basic/Targets.cpp @@ -2335,7 +2335,8 @@ class X86TargetInfo : public TargetInfo { public: X86TargetInfo(const llvm::Triple &Triple) : TargetInfo(Triple) { BigEndian = false; - LongDoubleFormat = &llvm::APFloat::x87DoubleExtended; + LongDoubleFormat = Triple.isOSIAMCU() ? &llvm::APFloat::IEEEdouble + : &llvm::APFloat::x87DoubleExtended; } unsigned getFloatEvalMethod() const override { // X87 evaluates with 80 bits "long double" precision. @@ -3370,6 +3371,11 @@ void X86TargetInfo::getTargetDefines(const LangOptions &Opts, } if (CPU >= CK_i586) Builder.defineMacro("__GCC_HAVE_SYNC_COMPARE_AND_SWAP_8"); + + if (getTriple().isOSIAMCU()) { + Builder.defineMacro("__iamcu"); + Builder.defineMacro("__iamcu__"); + } } bool X86TargetInfo::hasFeature(StringRef Feature) const { diff --git a/test/CodeGen/x86_32-arguments-iamcu.c b/test/CodeGen/x86_32-arguments-iamcu.c index 5b177bf8c6..bac2fb71a0 100644 --- a/test/CodeGen/x86_32-arguments-iamcu.c +++ b/test/CodeGen/x86_32-arguments-iamcu.c @@ -56,3 +56,7 @@ st12_t retLargeStruct(int i1, st12_t r) { return r; } // insane. // CHECK-LABEL: define i32 @varArgs(i32 inreg %i1, ...) int varArgs(int i1, ...) { return i1; } + +// CHECK-LABEL: define double @longDoubleArg(double %ld1) +long double longDoubleArg(long double ld1) { return ld1; } + diff --git a/test/Preprocessor/elfiamcu-predefines.c b/test/Preprocessor/elfiamcu-predefines.c new file mode 100644 index 0000000000..af5e40e3c8 --- /dev/null +++ b/test/Preprocessor/elfiamcu-predefines.c @@ -0,0 +1,5 @@ +// RUN: %clang_cc1 -E -dM -triple i586-intel-elfiamcu | FileCheck %s + +// CHECK: #define __iamcu +// CHECK: #define __iamcu__ + -- 2.40.0