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[RISCV] Add Clang frontend support for Bitmanip extension 

Summary: This adds the __riscv_bitmanip macro and the 'b' target feature to enable it.

Reviewers: asb, simoncook, lewis-revill, PaoloS, lenary

Reviewed By: lenary

Subscribers: Jim, rbar, johnrusso, sabuasal, niosHD, kito-cheng, shiva0217, jrtc27, MaskRay, zzheng, edward-jones, rogfer01, MartinMosbeck, brucehoult, the_o, rkruppe, PkmX, jocewei, psnobl, benna, pzheng, sameer.abuasal, apazos, luismarques, cfe-commits

Tags: #clang

Differential Revision: https://reviews.llvm.org/D71553
This commit is contained in:
Scott Egerton 2020-01-14 17:45:45 +00:00
parent fd19ffc6a5
commit 57cf6ee9c8
4 changed files with 19 additions and 1 deletions
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7
clang/lib/Basic/Targets/RISCV.cpp
View File

@ -125,6 +125,10 @@ void RISCVTargetInfo::getTargetDefines(const LangOptions &Opts,
if (HasC)
Builder.defineMacro("__riscv_compressed");
if (HasB) {
Builder.defineMacro("__riscv_bitmanip");
}
}
/// Return true if has this feature, need to sync with handleTargetFeatures.
@ -139,6 +143,7 @@ bool RISCVTargetInfo::hasFeature(StringRef Feature) const {
.Case("f", HasF)
.Case("d", HasD)
.Case("c", HasC)
.Case("b", HasB)
.Default(false);
}
@ -156,6 +161,8 @@ bool RISCVTargetInfo::handleTargetFeatures(std::vector<std::string> &Features,
HasD = true;
else if (Feature == "+c")
HasC = true;
else if (Feature == "+b")
HasB = true;
}
return true;

3
clang/lib/Basic/Targets/RISCV.h
View File

@ -30,11 +30,12 @@ protected:
bool HasF;
bool HasD;
bool HasC;
bool HasB;
public:
RISCVTargetInfo(const llvm::Triple &Triple, const TargetOptions &)
: TargetInfo(Triple), HasM(false), HasA(false), HasF(false),
HasD(false), HasC(false) {
HasD(false), HasC(false), HasB(false) {
LongDoubleWidth = 128;
LongDoubleAlign = 128;
LongDoubleFormat = &llvm::APFloat::IEEEquad();

3
clang/lib/Driver/ToolChains/Arch/RISCV.cpp
View File

@ -331,6 +331,9 @@ static bool getArchFeatures(const Driver &D, StringRef MArch,
case 'c':
Features.push_back("+c");
break;
case 'b':
Features.push_back("+b");
break;
}
}

7
clang/test/Preprocessor/riscv-target-features.c
View File

@ -7,6 +7,7 @@
// CHECK-NOT: __riscv_mul
// CHECK-NOT: __riscv_muldiv
// CHECK-NOT: __riscv_compressed
// CHECK-NOT: __riscv_bitmanip
// CHECK-NOT: __riscv_flen
// CHECK-NOT: __riscv_fdiv
// CHECK-NOT: __riscv_fsqrt
@ -48,6 +49,12 @@
// RUN: -o - | FileCheck --check-prefix=CHECK-C-EXT %s
// CHECK-C-EXT: __riscv_compressed 1
// RUN: %clang -target riscv32-unknown-linux-gnu -march=rv32ib -x c -E -dM %s \
// RUN: -o - | FileCheck --check-prefix=CHECK-B-EXT %s
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64ib -x c -E -dM %s \
// RUN: -o - | FileCheck --check-prefix=CHECK-B-EXT %s
// CHECK-B-EXT: __riscv_bitmanip 1
// RUN: %clang -target riscv32-unknown-linux-gnu -march=rv32ifd -mabi=ilp32 -x c -E -dM %s \
// RUN: -o - | FileCheck --check-prefix=CHECK-SOFT %s
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64ifd -mabi=lp64 -x c -E -dM %s \