Disable Loop Strength Reduction on ARM

Works around #36062
JuliaLang · Jul 17, 2020 · 76356ec · 76356ec
1 parent ad4b1ec
commit 76356ec
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/codegen.cpp b/src/codegen.cpp
@@ -7493,6 +7493,12 @@ extern "C" void jl_init_llvm(void)
 #if defined(_CPU_X86_) || defined(_CPU_X86_64_)
  const char *const argv_avoidsfb[] = {"", "-x86-disable-avoid-SFB"}; // llvm bug 41629, see https://gist.github.com/vtjnash/192cab72a6cfc00256ff118238163b55
  cl::ParseCommandLineOptions(sizeof(argv_avoidsfb)/sizeof(argv_avoidsfb[0]), argv_avoidsfb, "disable-avoidsfb\n");
+#endif
+#if defined(_CPU_ARM_)
+ // Workaround https://bugs.llvm.org/show_bug.cgi?id=46757
+ // Julia issue #36062
+ const char *const argv_lsr[] = {"", "-disable-lsr"};
+ cl::ParseCommandLineOptions(sizeof(argv_lsr)/sizeof(argv_lsr[0]), argv_lsr, "disable-lsr\n");
 #endif
  cl::ParseEnvironmentOptions("Julia", "JULIA_LLVM_ARGS");