[clang] afab3c4 - [Driver] Default Generic_GCC x86 to -fasynchronous-unwind-tables

[Fangrui Song via cfe-commits]

Author: Fangrui Song
Date: 2021-09-23T19:39:50-07:00
New Revision: afab3c488f0c86af87e262cc7454e04de18e3e6a

URL: https://github.com/llvm/llvm-project/commit/afab3c488f0c86af87e262cc7454e04de18e3e6a
DIFF: https://github.com/llvm/llvm-project/commit/afab3c488f0c86af87e262cc7454e04de18e3e6a.diff

LOG: [Driver] Default Generic_GCC x86 to -fasynchronous-unwind-tables

to match GCC and Clang's own x86-64.

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/Gnu.cpp
    clang/test/Driver/clang-translation.c

Removed: 
    


################################################################################
diff  --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
index 79bec347baad..9aca45312bb0 100644
--- a/clang/lib/Driver/ToolChains/Gnu.cpp
+++ b/clang/lib/Driver/ToolChains/Gnu.cpp
@@ -2713,6 +2713,7 @@ bool Generic_GCC::IsUnwindTablesDefault(const ArgList &Args) const {
   case llvm::Triple::ppcle:
   case llvm::Triple::ppc64:
   case llvm::Triple::ppc64le:
+  case llvm::Triple::x86:
   case llvm::Triple::x86_64:
     return true;
   default:

diff  --git a/clang/test/Driver/clang-translation.c b/clang/test/Driver/clang-translation.c
index 42322e579472..9802ee3da239 100644
--- a/clang/test/Driver/clang-translation.c
+++ b/clang/test/Driver/clang-translation.c
@@ -1,10 +1,10 @@
-// RUN: %clang -target i386-unknown-unknown -### -S -O0 -Os %s -o %t.s -fverbose-asm -funwind-tables -fvisibility=hidden 2>&1 | FileCheck -check-prefix=I386 %s
+// RUN: %clang -target i386-unknown-unknown -### -S -O0 -Os %s -o %t.s -fverbose-asm -fvisibility=hidden 2>&1 | FileCheck -check-prefix=I386 %s
 // I386: "-triple" "i386-unknown-unknown"
 // I386: "-S"
 // I386: "-disable-free"
 // I386: "-mrelocation-model" "static"
 // I386: "-mframe-pointer=all"
-// I386: "-funwind-tables=1"
+// I386: "-funwind-tables=2"
 // I386: "-Os"
 // I386: "-fvisibility"
 // I386: "hidden"