clang-cl: Remove -O0 option

cl.exe doesn't understand it; there's /Od instead. See also the review
thread for r229575.

Update lots of compiler-rt tests to use -Od instead of -O0.
Ran `rg -l 'clang_cl.*O0' compiler-rt/test/ | xargs sed -i -c 's/-O0/-Od/'`

Differential Revision: https://reviews.llvm.org/D64506

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@365724 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/clang/Driver/CLCompatOptions.td b/include/clang/Driver/CLCompatOptions.td
index 771424af789ff4a9ad747dff85a235c13d4089f7..a0af3035ea46b9b40fcd689e015fc9fd9e73f4a7 100644 (file)
--- a/include/clang/Driver/CLCompatOptions.td
+++ b/include/clang/Driver/CLCompatOptions.td
@@ -120,8 +120,6 @@ def _SLASH_J : CLFlag<"J">, HelpText<"Make char type unsigned">,
 def _SLASH_O : CLJoined<"O">,
   HelpText<"Set multiple /O flags at once; e.g. '/O2y-' for '/O2 /Oy-'">,
   MetaVarName<"<flags>">;
-// FIXME: Not sure why we have -O0 here; MSVC doesn't support that.
-def : CLFlag<"O0">, Alias<O0>, HelpText<"Disable optimization">;
 def : CLFlag<"O1">, Alias<_SLASH_O>, AliasArgs<["1"]>,
   HelpText<"Optimize for size  (like /Og     /Os /Oy /Ob2 /GF /Gy)">;
 def : CLFlag<"O2">, Alias<_SLASH_O>, AliasArgs<["2"]>,