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[RISCV] Add option aliases: -mcmodel=medany and -mcmodel=medlow 

RISC-V GCC use -mcmodel=medany and -mcmodel=medlow, but LLVM use
-mcmodel=small and -mcmodel=medium.

Add those two option aliases for provide same user interface between
GCC and LLVM.

Reviewed By: lenary

Differential Revision: https://reviews.llvm.org/D67066

llvm-svn: 372080
This commit is contained in:
Kito Cheng 2019-09-17 08:19:17 +00:00
parent 5c17323dd8
commit 42fe2fc8c9
2 changed files with 16 additions and 0 deletions
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6
clang/include/clang/Driver/Options.td
View File

@ -2177,6 +2177,12 @@ def msave_restore : Flag<["-"], "msave-restore">, Group<m_riscv_Features_Group>,
HelpText<"Enable using library calls for save and restore">;
def mno_save_restore : Flag<["-"], "mno-save-restore">, Group<m_riscv_Features_Group>,
HelpText<"Disable using library calls for save and restore">;
def mcmodel_EQ_medlow : Flag<["-"], "mcmodel=medlow">, Group<m_riscv_Features_Group>,
Flags<[CC1Option]>, Alias<mcmodel_EQ>, AliasArgs<["small"]>,
HelpText<"Equivalent to -mcmodel=small, compatible with RISC-V gcc.">;
def mcmodel_EQ_medany : Flag<["-"], "mcmodel=medany">, Group<m_riscv_Features_Group>,
Flags<[CC1Option]>, Alias<mcmodel_EQ>, AliasArgs<["medium"]>,
HelpText<"Equivalent to -mcmodel=medium, compatible with RISC-V gcc.">;
def munaligned_access : Flag<["-"], "munaligned-access">, Group<m_arm_Features_Group>,
HelpText<"Allow memory accesses to be unaligned (AArch32/AArch64 only)">;

10
clang/test/Preprocessor/riscv-cmodel.c
View File

@ -8,6 +8,11 @@
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64i -x c -E -dM %s \
// RUN: -mcmodel=small -o - | FileCheck --check-prefix=CHECK-MEDLOW %s
// RUN: %clang -target riscv32-unknown-linux-gnu -march=rv32i -x c -E -dM %s \
// RUN: -mcmodel=medlow -o - | FileCheck --check-prefix=CHECK-MEDLOW %s
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64i -x c -E -dM %s \
// RUN: -mcmodel=medlow -o - | FileCheck --check-prefix=CHECK-MEDLOW %s
// CHECK-MEDLOW: #define __riscv_cmodel_medlow 1
// CHECK-MEDLOW-NOT: __riscv_cmodel_medany
@ -16,5 +21,10 @@
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64i -x c -E -dM %s \
// RUN: -mcmodel=medium -o - | FileCheck --check-prefix=CHECK-MEDANY %s
// RUN: %clang -target riscv32-unknown-linux-gnu -march=rv32i -x c -E -dM %s \
// RUN: -mcmodel=medany -o - | FileCheck --check-prefix=CHECK-MEDANY %s
// RUN: %clang -target riscv64-unknown-linux-gnu -march=rv64i -x c -E -dM %s \
// RUN: -mcmodel=medany -o - | FileCheck --check-prefix=CHECK-MEDANY %s
// CHECK-MEDANY: #define __riscv_cmodel_medany 1
// CHECK-MEDANY-NOT: __riscv_cmodel_medlow