[PATCH] D47127: [RISCV] Default enable RISCV linker relaxation
Shiva Chen via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Mon May 21 01:05:10 PDT 2018
shiva0217 created this revision.
shiva0217 added reviewers: asb, apazos.
Herald added subscribers: mgrang, edward-jones, zzheng, kito-cheng, niosHD, sabuasal, jordy.potman.lists, simoncook, johnrusso, rbar.
Default enable RISCV linker relaxation
Repository:
rL LLVM
https://reviews.llvm.org/D47127
Files:
lib/Driver/ToolChains/Arch/RISCV.cpp
test/Driver/riscv-features.c
Index: test/Driver/riscv-features.c
===================================================================
--- test/Driver/riscv-features.c
+++ test/Driver/riscv-features.c
@@ -5,6 +5,8 @@
// RUN: %clang -target riscv32-unknown-elf -### %s -mrelax 2>&1 | FileCheck %s -check-prefix=RELAX
// RUN: %clang -target riscv32-unknown-elf -### %s -mno-relax 2>&1 | FileCheck %s -check-prefix=NO-RELAX
+// RUN: %clang -target riscv32-unknown-elf -### %s 2>&1 | FileCheck %s -check-prefix=DEFAULT
// RELAX: "-target-feature" "+relax"
// NO-RELAX: "-target-feature" "-relax"
+// DEFAULT: "-target-feature" "+relax"
Index: lib/Driver/ToolChains/Arch/RISCV.cpp
===================================================================
--- lib/Driver/ToolChains/Arch/RISCV.cpp
+++ lib/Driver/ToolChains/Arch/RISCV.cpp
@@ -365,6 +365,17 @@
getExtensionFeatures(D, Args, Features, MArch, OtherExts);
}
+ // -mrelax is default, unless -mno-relax is specified.
+ bool Relax = true;
+ if (auto *A = Args.getLastArg(options::OPT_mrelax, options::OPT_mno_relax))
+ if (A->getOption().matches(options::OPT_mno_relax)) {
+ Relax = false;
+ Features.push_back("-relax");
+ }
+
+ if (Relax)
+ Features.push_back("+relax");
+
// Now add any that the user explicitly requested on the command line,
// which may override the defaults.
handleTargetFeaturesGroup(Args, Features, options::OPT_m_riscv_Features_Group);
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