Add register Mips::GP to the list of reserved registers if target is bare-metal
to prevent it from being clobbered. mips uses $gp to access small data section.
This bug was originally reported by Carl Norum.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162340 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/Mips/MipsTargetObjectFile.cpp b/lib/Target/Mips/MipsTargetObjectFile.cpp
index 04dc60a..a7fb454 100644
--- a/lib/Target/Mips/MipsTargetObjectFile.cpp
+++ b/lib/Target/Mips/MipsTargetObjectFile.cpp
@@ -60,9 +60,10 @@
IsGlobalInSmallSection(const GlobalValue *GV, const TargetMachine &TM,
SectionKind Kind) const {
- // Only use small section for non linux targets.
const MipsSubtarget &Subtarget = TM.getSubtarget<MipsSubtarget>();
- if (Subtarget.isLinux())
+
+ // Return if small section is not available.
+ if (!Subtarget.useSmallSection())
return false;
// Only global variables, not functions.