[Bug 111376] [bisected] Steam crashes when newest Iris built with LTO

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Mon Aug 12 22:12:27 UTC 2019


https://bugs.freedesktop.org/show_bug.cgi?id=111376

--- Comment #6 from Eric Engestrom <fdo-bugs at engestrom.ch> ---
As a workaround, this disables LTO on GCC just for iris:
---8<---
diff --git a/src/gallium/drivers/iris/meson.build
b/src/gallium/drivers/iris/meson.build
index 3f611c2b5698be71ba08..c9f62a877c0df6889411 100644
--- a/src/gallium/drivers/iris/meson.build
+++ b/src/gallium/drivers/iris/meson.build
@@ -85,8 +85,8 @@ libiris = static_library(
     # these should not be necessary, but main/macros.h...
     inc_mesa, inc_mapi
   ],
-  c_args : [c_vis_args, c_sse2_args],
-  cpp_args : [cpp_vis_args, c_sse2_args],
+  c_args : [c_vis_args, c_sse2_args, gcc_lto_quirk],
+  cpp_args : [cpp_vis_args, c_sse2_args, gcc_lto_quirk],
   dependencies : [dep_libdrm, dep_valgrind, idep_genxml,
idep_libintel_common],
   link_with : [
     iris_gen_libs, libintel_compiler, libintel_dev, libisl,
--->8---

Does this help?

Have you checked if LTO causes any issues on Clang for instance?

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