Author: Fangrui Song Date: 2024-04-28T09:42:43-07:00 New Revision: 8ad092f126bd1d6f9fe6006eba1e3115a080235e
URL: https://github.com/llvm/llvm-project/commit/8ad092f126bd1d6f9fe6006eba1e3115a080235e DIFF: https://github.com/llvm/llvm-project/commit/8ad092f126bd1d6f9fe6006eba1e3115a080235e.diff LOG: [cc1as] Respect -mrelax-all So that `clang -c -mrelax-all a.s` sets MCRelaxAll and assembles JMP/JCC to a near jump instead of silently ignoring `-mrelax-all`. Added: clang/test/Misc/cc1as-relax-all.s Modified: clang/tools/driver/cc1as_main.cpp Removed: ################################################################################ diff --git a/clang/test/Misc/cc1as-relax-all.s b/clang/test/Misc/cc1as-relax-all.s new file mode 100644 index 00000000000000..e76fc6f61babb9 --- /dev/null +++ b/clang/test/Misc/cc1as-relax-all.s @@ -0,0 +1,13 @@ +// REQUIRES: x86-registered-target +// RUN: %clang -cc1as -triple x86_64 -filetype obj -mrelax-all %s -o %t.o +// RUN: llvm-objdump -d %t.o | FileCheck %s + +// CHECK: <.text>: +// CHECK-NEXT: 0: e9 06 00 00 00 jmp 0xb <foo> +// CHECK-NEXT: 5: 0f 84 00 00 00 00 je 0xb <foo> +// CHECK-EMPTY: + +jmp foo +je foo + +foo: ret diff --git a/clang/tools/driver/cc1as_main.cpp b/clang/tools/driver/cc1as_main.cpp index 5498c3f9d4a20d..86afe22fac24cc 100644 --- a/clang/tools/driver/cc1as_main.cpp +++ b/clang/tools/driver/cc1as_main.cpp @@ -426,6 +426,7 @@ static bool ExecuteAssemblerImpl(AssemblerInvocation &Opts, assert(MRI && "Unable to create target register info!"); MCTargetOptions MCOptions; + MCOptions.MCRelaxAll = Opts.RelaxAll; MCOptions.EmitDwarfUnwind = Opts.EmitDwarfUnwind; MCOptions.EmitCompactUnwindNonCanonical = Opts.EmitCompactUnwindNonCanonical; MCOptions.X86RelaxRelocations = Opts.RelaxELFRelocations; _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
