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enable SDISel sincos optimization for GNU environments

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- add sincos to runtime library if target triple environment is GNU
- added canCombineSinCosLibcall() which checks that sincos is in the RTL and
  if the environment is GNU then unsafe fpmath is enabled (required to
  preserve errno)
- extended sincos-opt lit test

Reviewed by: Hal Finkel


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175283 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Paul Redmond
2013-02-15 18:45:18 +00:00
parent 55a98b00c1
commit 86cdbc9c29
3 changed files with 73 additions and 23 deletions
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lib/CodeGen/TargetLoweringBase.cpp
+17 -8
View File
@@ -14,6 +14,7 @@
#include "llvm/Target/TargetLowering.h"
#include "llvm/ADT/BitVector.h"
#include "llvm/ADT/STLExtras.h"
#include "llvm/ADT/Triple.h"
#include "llvm/CodeGen/Analysis.h"
#include "llvm/CodeGen/MachineFrameInfo.h"
#include "llvm/CodeGen/MachineFunction.h"
@@ -34,7 +35,7 @@ using namespace llvm;
/// InitLibcallNames - Set default libcall names.
///
static void InitLibcallNames(const char **Names) {
static void InitLibcallNames(const char **Names, const TargetMachine &TM) {
Names[RTLIB::SHL_I16] = "__ashlhi3";
Names[RTLIB::SHL_I32] = "__ashlsi3";
Names[RTLIB::SHL_I64] = "__ashldi3";
@@ -341,12 +342,20 @@ static void InitLibcallNames(const char **Names) {
Names[RTLIB::SYNC_FETCH_AND_NAND_4] = "__sync_fetch_and_nand_4";
Names[RTLIB::SYNC_FETCH_AND_NAND_8] = "__sync_fetch_and_nand_8";
// These are generally not available.
Names[RTLIB::SINCOS_F32] = 0;
Names[RTLIB::SINCOS_F64] = 0;
Names[RTLIB::SINCOS_F80] = 0;
Names[RTLIB::SINCOS_F128] = 0;
Names[RTLIB::SINCOS_PPCF128] = 0;
if (Triple(TM.getTargetTriple()).getEnvironment() == Triple::GNU) {
Names[RTLIB::SINCOS_F32] = "sincosf";
Names[RTLIB::SINCOS_F64] = "sincos";
Names[RTLIB::SINCOS_F80] = "sincosl";
Names[RTLIB::SINCOS_F128] = "sincosl";
Names[RTLIB::SINCOS_PPCF128] = "sincosl";
} else {
// These are generally not available.
Names[RTLIB::SINCOS_F32] = 0;
Names[RTLIB::SINCOS_F64] = 0;
Names[RTLIB::SINCOS_F80] = 0;
Names[RTLIB::SINCOS_F128] = 0;
Names[RTLIB::SINCOS_PPCF128] = 0;
}
}
/// InitLibcallCallingConvs - Set default libcall CallingConvs.
@@ -726,7 +735,7 @@ TargetLoweringBase::TargetLoweringBase(const TargetMachine &tm,
SupportJumpTables = true;
MinimumJumpTableEntries = 4;
InitLibcallNames(LibcallRoutineNames);
InitLibcallNames(LibcallRoutineNames, TM);
InitCmpLibcallCCs(CmpLibcallCCs);
InitLibcallCallingConvs(LibcallCallingConvs);
}