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[RISCV] Create a LinuxTargetInfo when targeting Linux

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Previously, RISCV32TargetInfo or RISCV64TargetInfo were created 
unconditionally. Use LinuxTargetInfo<RISCV??TargetInfo> to ensure that the 
proper OS-specific defines are present.

This patch only adds logic to instantiate LinuxTargetInfo and leaves a TODO, 
as I'm reluctant to add logic for other targets (e.g. FreeBSD, RTEMS) until 
I've produced and tested at least one binary for that OS+target combo.

Thanks to @mgrang to reporting the issue.

llvm-svn: 324170
This commit is contained in:
Alex Bradbury 2018-02-03 11:56:11 +00:00
parent a43ba2d84f
commit 3e1478f866
2 changed files with 24 additions and 0 deletions
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6
clang/lib/Basic/Targets.cpp
View File

@ -372,8 +372,14 @@ TargetInfo *AllocateTarget(const llvm::Triple &Triple,
return new AMDGPUTargetInfo(Triple, Opts);
case llvm::Triple::riscv32:
// TODO: add cases for FreeBSD, NetBSD, RTEMS once tested.
if (os == llvm::Triple::Linux)
return new LinuxTargetInfo<RISCV32TargetInfo>(Triple, Opts);
return new RISCV32TargetInfo(Triple, Opts);
case llvm::Triple::riscv64:
// TODO: add cases for FreeBSD, NetBSD, RTEMS once tested.
if (os == llvm::Triple::Linux)
return new LinuxTargetInfo<RISCV64TargetInfo>(Triple, Opts);
return new RISCV64TargetInfo(Triple, Opts);
case llvm::Triple::sparc:

18
clang/test/Preprocessor/init.c
View File

@ -10005,6 +10005,8 @@
// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv32 < /dev/null \
// RUN: | FileCheck -match-full-lines -check-prefix=RISCV32 %s
// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv32-unknown-linux < /dev/null \
// RUN: | FileCheck -match-full-lines -check-prefixes=RISCV32,RISCV32-LINUX %s
// RISCV32: #define _ILP32 1
// RISCV32: #define __ATOMIC_ACQUIRE 2
// RISCV32: #define __ATOMIC_ACQ_REL 4
@ -10196,13 +10198,22 @@
// RISCV32: #define __WINT_TYPE__ unsigned int
// RISCV32: #define __WINT_UNSIGNED__ 1
// RISCV32: #define __WINT_WIDTH__ 32
// RISCV32-LINUX: #define __gnu_linux__ 1
// RISCV32-LINUX: #define __linux 1
// RISCV32-LINUX: #define __linux__ 1
// RISCV32: #define __riscv 1
// RISCV32: #define __riscv_cmodel_medlow 1
// RISCV32: #define __riscv_float_abi_soft 1
// RISCV32: #define __riscv_xlen 32
// RISCV32-LINUX: #define __unix 1
// RISCV32-LINUX: #define __unix__ 1
// RISCV32-LINUX: #define linux 1
// RISCV32-LINUX: #define unix 1
// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv64 < /dev/null \
// RUN: | FileCheck -match-full-lines -check-prefix=RISCV64 %s
// RUN: %clang_cc1 -E -dM -ffreestanding -triple=riscv64-unknown-linux < /dev/null \
// RUN: | FileCheck -match-full-lines -check-prefixes=RISCV64,RISCV64-LINUX %s
// RISCV64: #define _LP64 1
// RISCV64: #define __ATOMIC_ACQUIRE 2
// RISCV64: #define __ATOMIC_ACQ_REL 4
@ -10394,7 +10405,14 @@
// RISCV64: #define __WINT_TYPE__ unsigned int
// RISCV64: #define __WINT_UNSIGNED__ 1
// RISCV64: #define __WINT_WIDTH__ 32
// RISCV64-LINUX: #define __gnu_linux__ 1
// RISCV64-LINUX: #define __linux 1
// RISCV64-LINUX: #define __linux__ 1
// RISCV64: #define __riscv 1
// RISCV64: #define __riscv_cmodel_medlow 1
// RISCV64: #define __riscv_float_abi_soft 1
// RISCV64: #define __riscv_xlen 64
// RISCV64-LINUX: #define __unix 1
// RISCV64-LINUX: #define __unix__ 1
// RISCV64-LINUX: #define linux 1
// RISCV64-LINUX: #define unix 1