[all-commits] [llvm/llvm-project] 73c7a6: [Hexagon] Add LTO options to Hexagon driver link a...

[Brian Cain via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 73c7a6121956ceea1bc935c57292e5811e05e650
      https://github.com/llvm/llvm-project/commit/73c7a6121956ceea1bc935c57292e5811e05e650
  Author: Brian Cain <brian.cain at oss.qualcomm.com>
  Date:   2026-04-15 (Wed, 15 Apr 2026)

  Changed paths:
    M clang/lib/Driver/ToolChains/Hexagon.cpp
    M clang/test/Driver/hexagon-toolchain-elf.c
    M clang/test/Driver/hexagon-toolchain-linux.c

  Log Message:
  -----------
  [Hexagon] Add LTO options to Hexagon driver link args (#191336)

The Hexagon driver's constructHexagonLinkArgs() was not calling
addLTOOptions(). This meant that LTO plugin options weren't forwarded to
the linker.

This caused a crash when using ThinLTO with -fenable-matrix on
llvm-test-suite/SingleSource/UnitTests/matrix-types-spec.cpp:
LowerMatrixIntrinsicsPass did not run in the LTO backend because
-enable-matrix was not forwarded via -plugin-opt.

Add the addLTOOptions() call to both the musl and bare-metal code paths
in constructHexagonLinkArgs().



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