[MIPS] Implement support for -mstack-alignment.
Summary:
This is modeled on the implementation for x86 which stores the command line
option in a 'StackAlignOverride' field in MipsSubtarget and then uses this
to compute a 'stackAlignment' value in
MipsSubtarget::initializeSubtargetDependencies.
The stackAlignment() method in MipsSubTarget is renamed to getStackAlignment()
and returns the computed 'stackAlignment'.
Reviewers: sdardis
Reviewed By: sdardis
Subscribers: llvm-commits, arichardson
Differential Revision: https://reviews.llvm.org/D35874
llvm-svn: 310891
diff --git a/llvm/lib/Target/Mips/MipsTargetMachine.cpp b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
index 4ed0647..2f01b24 100644
--- a/llvm/lib/Target/Mips/MipsTargetMachine.cpp
+++ b/llvm/lib/Target/Mips/MipsTargetMachine.cpp
@@ -114,11 +114,12 @@
getEffectiveCodeModel(CM), OL),
isLittle(isLittle), TLOF(llvm::make_unique<MipsTargetObjectFile>()),
ABI(MipsABIInfo::computeTargetABI(TT, CPU, Options.MCOptions)),
- Subtarget(nullptr), DefaultSubtarget(TT, CPU, FS, isLittle, *this),
+ Subtarget(nullptr), DefaultSubtarget(TT, CPU, FS, isLittle, *this,
+ Options.StackAlignmentOverride),
NoMips16Subtarget(TT, CPU, FS.empty() ? "-mips16" : FS.str() + ",-mips16",
- isLittle, *this),
+ isLittle, *this, Options.StackAlignmentOverride),
Mips16Subtarget(TT, CPU, FS.empty() ? "+mips16" : FS.str() + ",+mips16",
- isLittle, *this) {
+ isLittle, *this, Options.StackAlignmentOverride) {
Subtarget = &DefaultSubtarget;
initAsmInfo();
}
@@ -191,7 +192,7 @@
// function that reside in TargetOptions.
resetTargetOptions(F);
I = llvm::make_unique<MipsSubtarget>(TargetTriple, CPU, FS, isLittle,
- *this);
+ *this, Options.StackAlignmentOverride);
}
return I.get();
}