https://github.com/quic-garvgupt updated https://github.com/llvm/llvm-project/pull/81727
>From 0d1f9be389a41ba2f1531bf13e8d1f14aadf9eeb Mon Sep 17 00:00:00 2001 From: Garvit Gupta <quic_garvg...@quicinc.com> Date: Wed, 14 Feb 2024 03:00:20 -0800 Subject: [PATCH] [RISCV] Disable generation of asynchronous unwind tables for RISCV baremetal The below culprit patch enabled the generation of asynchronous unwind tables (-funwind-tables=2) by default for RISCV for both linux and RISCVToolChain baremetal object. However, since there are 2 baremetal toolchain objects for RISCV, this created a discrepancy between their behavior. Moreover, enabling the generation of asynchronous unwind tables based on whether `-gcc-toolchain` option is present or not doesn't seem to be the best criteria to decide on the same. Culprit Patch - https://reviews.llvm.org/D145164 --- clang/lib/Driver/ToolChains/RISCVToolchain.cpp | 5 +++++ clang/lib/Driver/ToolChains/RISCVToolchain.h | 2 ++ clang/test/Driver/riscv-features.c | 8 ++++++++ 3 files changed, 15 insertions(+) diff --git a/clang/lib/Driver/ToolChains/RISCVToolchain.cpp b/clang/lib/Driver/ToolChains/RISCVToolchain.cpp index 85beb945cbf6fc..624099d21ae124 100644 --- a/clang/lib/Driver/ToolChains/RISCVToolchain.cpp +++ b/clang/lib/Driver/ToolChains/RISCVToolchain.cpp @@ -86,6 +86,11 @@ RISCVToolChain::GetUnwindLibType(const llvm::opt::ArgList &Args) const { return ToolChain::UNW_None; } +ToolChain::UnwindTableLevel RISCVToolChain::getDefaultUnwindTableLevel( + const llvm::opt::ArgList &Args) const { + return UnwindTableLevel::None; +} + void RISCVToolChain::addClangTargetOptions( const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args, diff --git a/clang/lib/Driver/ToolChains/RISCVToolchain.h b/clang/lib/Driver/ToolChains/RISCVToolchain.h index cec817ef7190be..fa0aa265d842bb 100644 --- a/clang/lib/Driver/ToolChains/RISCVToolchain.h +++ b/clang/lib/Driver/ToolChains/RISCVToolchain.h @@ -28,6 +28,8 @@ class LLVM_LIBRARY_VISIBILITY RISCVToolChain : public Generic_ELF { RuntimeLibType GetDefaultRuntimeLibType() const override; UnwindLibType GetUnwindLibType(const llvm::opt::ArgList &Args) const override; + UnwindTableLevel + getDefaultUnwindTableLevel(const llvm::opt::ArgList &Args) const override; void AddClangSystemIncludeArgs(const llvm::opt::ArgList &DriverArgs, llvm::opt::ArgStringList &CC1Args) const override; diff --git a/clang/test/Driver/riscv-features.c b/clang/test/Driver/riscv-features.c index a108383e29fb6b..fc5fb0f27e3af4 100644 --- a/clang/test/Driver/riscv-features.c +++ b/clang/test/Driver/riscv-features.c @@ -41,6 +41,14 @@ // FAST-UNALIGNED-ACCESS: "-target-feature" "+fast-unaligned-access" // NO-FAST-UNALIGNED-ACCESS: "-target-feature" "-fast-unaligned-access" +// RUN: %clang --target=riscv32-unknown-elf --gcc-toolchain="" -### %s 2>&1 | FileCheck %s -check-prefix=NOUWTABLE +// RUN: %clang --target=riscv32-unknown-elf --gcc-toolchain="" -fasynchronous-unwind-tables -### %s 2>&1 | FileCheck %s -check-prefix=UWTABLE +// RUN: %clang --target=riscv64-unknown-elf --gcc-toolchain="" -### %s 2>&1 | FileCheck %s -check-prefix=NOUWTABLE +// RUN: %clang --target=riscv64-unknown-elf --gcc-toolchain="" -fasynchronous-unwind-tables -### %s 2>&1 | FileCheck %s -check-prefix=UWTABLE +// +// UWTABLE: "-funwind-tables=2" +// NOUWTABLE-NOT: "-funwind-tables=2" + // RUN: %clang --target=riscv32-linux -### %s -fsyntax-only 2>&1 \ // RUN: | FileCheck %s -check-prefix=DEFAULT-LINUX // RUN: %clang --target=riscv64-linux -### %s -fsyntax-only 2>&1 \ _______________________________________________ cfe-commits mailing list cfe-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-commits
