[llvm-branch-commits] [clang] d843bde - [clang][driver] Fix float128 diagnostics with glibc >= 2.32

[Tom Stellard via llvm-branch-commits]

Author: Timm Bäder
Date: 2022-03-08T19:22:37-08:00
New Revision: d843bde69aab7fbb3efff34229e8876b1ce80a5b

URL: https://github.com/llvm/llvm-project/commit/d843bde69aab7fbb3efff34229e8876b1ce80a5b
DIFF: https://github.com/llvm/llvm-project/commit/d843bde69aab7fbb3efff34229e8876b1ce80a5b.diff

LOG: [clang][driver] Fix float128 diagnostics with glibc >= 2.32

Fix checking for an unsupported stdlib++.

Differential Revision: https://reviews.llvm.org/D121209

(cherry picked from commit 5b7941ad7c893b4bb019e3c96b760b0f2670ccfc)

Added: 
    

Modified: 
    clang/lib/Driver/ToolChains/PPCLinux.cpp

Removed: 
    


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diff  --git a/clang/lib/Driver/ToolChains/PPCLinux.cpp b/clang/lib/Driver/ToolChains/PPCLinux.cpp
index e480d8bd8703c..2fea262fd109c 100644
--- a/clang/lib/Driver/ToolChains/PPCLinux.cpp
+++ b/clang/lib/Driver/ToolChains/PPCLinux.cpp
@@ -76,9 +76,11 @@ bool PPCLinuxToolChain::SupportIEEEFloat128(
   if (Args.hasArg(options::OPT_nostdlib, options::OPT_nostdlibxx))
     return true;
 
+  CXXStdlibType StdLib = ToolChain::GetCXXStdlibType(Args);
   bool HasUnsupportedCXXLib =
-      ToolChain::GetCXXStdlibType(Args) == CST_Libcxx &&
-      GCCInstallation.getVersion().isOlderThan(12, 1, 0);
+      StdLib == CST_Libcxx ||
+      (StdLib == CST_Libstdcxx &&
+       GCCInstallation.getVersion().isOlderThan(12, 1, 0));
 
   return GlibcSupportsFloat128(Linux::getDynamicLinker(Args)) &&
          !(D.CCCIsCXX() && HasUnsupportedCXXLib);