From b033f67df0773ccc2565638df3ff3cf9f821629e Mon Sep 17 00:00:00 2001 From: Nemanja Ivanovic Date: Tue, 15 Dec 2015 12:19:34 +0000 Subject: [PATCH] Define a feature for __float128 support in the PPC back end This patch corresponds to review: http://reviews.llvm.org/D15117 In preparation for supporting IEEE Quad precision floating point, this patch simply defines a feature to specify the target supports this. For now, nothing is done with the target feature, we just don't want warnings from the Clang FE when a user specifies -mfloat128. Calling convention and other related work will add to this patch in the near future. llvm-svn: 255642 --- llvm/lib/Target/PowerPC/PPC.td | 4 ++++ llvm/lib/Target/PowerPC/PPCSubtarget.cpp | 1 + llvm/lib/Target/PowerPC/PPCSubtarget.h | 2 ++ 3 files changed, 7 insertions(+) diff --git a/llvm/lib/Target/PowerPC/PPC.td b/llvm/lib/Target/PowerPC/PPC.td index f0269112328a..b03be12cfd97 100644 --- a/llvm/lib/Target/PowerPC/PPC.td +++ b/llvm/lib/Target/PowerPC/PPC.td @@ -141,6 +141,10 @@ def FeatureMFTB : SubtargetFeature<"", "FeatureMFTB", "true", "Implement mftb using the mfspr instruction">; def FeatureFusion : SubtargetFeature<"fusion", "HasFusion", "true", "Target supports add/load integer fusion.">; +def FeatureFloat128 : + SubtargetFeature<"float128", "HasFloat128", "true", + "Enable the __float128 data type for IEEE-754R Binary128.", + [FeatureVSX]>; def DeprecatedDST : SubtargetFeature<"", "DeprecatedDST", "true", "Treat vector data stream cache control instructions as deprecated">; diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp index 89bbcf783463..c0fcb6cbb9dc 100644 --- a/llvm/lib/Target/PowerPC/PPCSubtarget.cpp +++ b/llvm/lib/Target/PowerPC/PPCSubtarget.cpp @@ -102,6 +102,7 @@ void PPCSubtarget::initializeEnvironment() { IsQPXStackUnaligned = false; HasHTM = false; HasFusion = false; + HasFloat128 = false; } void PPCSubtarget::initSubtargetFeatures(StringRef CPU, StringRef FS) { diff --git a/llvm/lib/Target/PowerPC/PPCSubtarget.h b/llvm/lib/Target/PowerPC/PPCSubtarget.h index a55c0d3a7228..4f5c95c1483f 100644 --- a/llvm/lib/Target/PowerPC/PPCSubtarget.h +++ b/llvm/lib/Target/PowerPC/PPCSubtarget.h @@ -121,6 +121,7 @@ protected: bool HasDirectMove; bool HasHTM; bool HasFusion; + bool HasFloat128; /// When targeting QPX running a stock PPC64 Linux kernel where the stack /// alignment has not been changed, we need to keep the 16-byte alignment @@ -259,6 +260,7 @@ public: } bool hasHTM() const { return HasHTM; } bool hasFusion() const { return HasFusion; } + bool hasFloat128() const { return HasFloat128; } const Triple &getTargetTriple() const { return TargetTriple; }