[PowerPC] Default ppc64 linux-gnu/freebsd to -fno-PIC

According to D53384, the default was switched from -fno-PIC to -fPIC to
work around a -fsanitize=leak bug on big-endian.

This gratuitous difference between little-endian and big-endian is
undesired, and not acceptable on powerpc64-unknown-freebsd.  If
-fsanitize=leak still has the problem, we should consider defaulting to
-fPIC/-fPIE only when -fsanitize=leak is specified (see SanitizerArgs::requiresPIE())

powerpc64-ibm-aix is unaffected: it still defaults to -fPIC.
powerpc64-linux-musl is unaffected (-fPIE since D39588): it still defaults to -fPIE.

Reviewed By: #powerpc, jhibbits

Differential Revision: https://reviews.llvm.org/D72363

1 files changed, 0 insertions, 3 deletions

diff --git a/clang/lib/Driver/ToolChains/Gnu.cpp b/clang/lib/Driver/ToolChains/Gnu.cpp
index 91076709fd7..da197e47662 100644
--- a/clang/lib/Driver/ToolChains/Gnu.cpp
+++ b/clang/lib/Driver/ToolChains/Gnu.cpp
@@ -2615,9 +2615,6 @@ bool Generic_GCC::isPICDefault() const {
   switch (getArch()) {
   case llvm::Triple::x86_64:
     return getTriple().isOSWindows();
-  case llvm::Triple::ppc64:
-    // Big endian PPC is PIC by default
-    return !getTriple().isOSBinFormatMachO() && !getTriple().isMacOSX();
   case llvm::Triple::mips64:
   case llvm::Triple::mips64el:
     return true;