intel/llvm
1
0
Fork 0
mirror of https://github.com/intel/llvm.git synced 2026-01-27 06:06:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

[PowerPC] Add clang option -m[no-]pcrel

Browse Source 
Summary:
Add user-facing front end option to turn off pc-relative memops.
This will be compatible with gcc.

Reviewers: stefanp, nemanjai, hfinkel, power-llvm-team, #powerpc, NeHuang, saghir

Reviewed By: stefanp, NeHuang, saghir

Subscribers: saghir, wuzish, shchenz, cfe-commits, kbarton, echristo

Tags: #clang, #powerpc

Differential Revision: https://reviews.llvm.org/D80757
This commit is contained in:
Lei Huang
2020-05-28 15:30:47 -05:00
parent 66a14d151e
commit 7cfded350a
4 changed files with 27 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
clang/include/clang/Driver/Options.td
View File

@@ -2470,6 +2470,8 @@ def faltivec : Flag<["-"], "faltivec">, Group<f_Group>, Flags<[DriverOption]>;
def fno_altivec : Flag<["-"], "fno-altivec">, Group<f_Group>, Flags<[DriverOption]>;
def maltivec : Flag<["-"], "maltivec">, Group<m_ppc_Features_Group>;
def mno_altivec : Flag<["-"], "mno-altivec">, Group<m_ppc_Features_Group>;
def mpcrel: Flag<["-"], "mpcrel">, Group<m_ppc_Features_Group>;
def mno_pcrel: Flag<["-"], "mno-pcrel">, Group<m_ppc_Features_Group>;
def mspe : Flag<["-"], "mspe">, Group<m_ppc_Features_Group>;
def mno_spe : Flag<["-"], "mno-spe">, Group<m_ppc_Features_Group>;
def mvsx : Flag<["-"], "mvsx">, Group<m_ppc_Features_Group>;

14
clang/lib/Basic/Targets/PPC.cpp
View File

@@ -54,6 +54,8 @@ bool PPCTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasFloat128 = true;
} else if (Feature == "+power9-vector") {
HasP9Vector = true;
} else if (Feature == "+pcrelative-memops") {
HasPCRelativeMemops = true;
} else if (Feature == "+spe") {
HasSPE = true;
LongDoubleWidth = LongDoubleAlign = 64;
@@ -346,6 +348,7 @@ bool PPCTargetInfo::initFeatureMap(
void PPCTargetInfo::addP10SpecificFeatures(
llvm::StringMap<bool> &Features) const {
Features["htm"] = false; // HTM was removed for P10.
Features["pcrelative-memops"] = true;
return;
}
@@ -369,6 +372,7 @@ bool PPCTargetInfo::hasFeature(StringRef Feature) const {
.Case("extdiv", HasExtDiv)
.Case("float128", HasFloat128)
.Case("power9-vector", HasP9Vector)
.Case("pcrelative-memops", HasPCRelativeMemops)
.Case("spe", HasSPE)
.Default(false);
}
@@ -389,7 +393,10 @@ void PPCTargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
Features["vsx"] = Features["altivec"] = true;
if (Name == "power9-vector")
Features["power8-vector"] = true;
Features[Name] = true;
if (Name == "pcrel")
Features["pcrelative-memops"] = true;
else
Features[Name] = true;
} else {
// If we're disabling altivec or vsx go ahead and disable all of the vsx
// features.
@@ -398,7 +405,10 @@ void PPCTargetInfo::setFeatureEnabled(llvm::StringMap<bool> &Features,
Features["float128"] = Features["power9-vector"] = false;
if (Name == "power8-vector")
Features["power9-vector"] = false;
Features[Name] = false;
if (Name == "pcrel")
Features["pcrelative-memops"] = false;
else
Features[Name] = false;
}
}

1
clang/lib/Basic/Targets/PPC.h
View File

@@ -69,6 +69,7 @@ class LLVM_LIBRARY_VISIBILITY PPCTargetInfo : public TargetInfo {
bool HasExtDiv = false;
bool HasP9Vector = false;
bool HasSPE = false;
bool HasPCRelativeMemops = false;
protected:
std::string ABI;

12
clang/test/Driver/ppc-pcrel.cpp Normal file
View File

@@ -0,0 +1,12 @@
// RUN: %clang -target powerpc64-unknown-linux-gnu %s -### -mcpu=pwr10 -mpcrel -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-PCREL %s
// RUN: %clang -target powerpc64-unknown-linux-gnu %s -### -mcpu=pwr10 -mno-pcrel -o %t.o 2>&1 | FileCheck -check-prefix=CHECK-NOPCREL %s
// CHECK-NOPCREL: "-target-feature" "-pcrel"
// CHECK-PCREL: "-target-feature" "+pcrel"
// RUN: %clang -target powerpc64-unknown-linux-gnu -mcpu=pwr10 -emit-llvm -S %s -o - | grep "attributes.*+pcrelative-memops"
// RUN: %clang -target powerpc64-unknown-linux-gnu -mcpu=pwr10 -mpcrel -emit-llvm -S %s -o - | grep "attributes.*+pcrelative-memops"
// RUN: %clang -target powerpc64-unknown-linux-gnu -mcpu=pwr10 -mno-pcrel -emit-llvm -S %s -o - | grep "attributes.*\-pcrelative-memops"
int main(int argc, char *argv[]) {
return 0;
}