[mips] Add assembler support for .set push/pop directive.

Summary:
These directives are used to save the current assembler options (in the case of ".set push") and restore the previously saved options (in the case of ".set pop").

Contains work done by Matheus Almeida.

Reviewers: dsanders

Reviewed By: dsanders

Differential Revision: http://reviews.llvm.org/D4821

llvm-svn: 217432

1 files changed, 7 insertions, 0 deletions

diff --git a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index d19307978d9..ddeef289fd5 100644
--- a/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/llvm/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -70,6 +70,8 @@ void MipsTargetStreamer::emitDirectiveSetMips32R6() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveSetMips64() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveSetMips64R2() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveSetMips64R6() { forbidModuleDirective(); }
+void MipsTargetStreamer::emitDirectiveSetPop() {}
+void MipsTargetStreamer::emitDirectiveSetPush() {}
 void MipsTargetStreamer::emitDirectiveSetDsp() { forbidModuleDirective(); }
 void MipsTargetStreamer::emitDirectiveCpload(unsigned RegNo) {}
 void MipsTargetStreamer::emitDirectiveCpsetup(unsigned RegNo, int RegOrOffset,
@@ -241,6 +243,11 @@ void MipsTargetAsmStreamer::emitDirectiveSetDsp() {
   OS << "\t.set\tdsp\n";
   MipsTargetStreamer::emitDirectiveSetDsp();
 }
+
+void MipsTargetAsmStreamer::emitDirectiveSetPop() { OS << "\t.set\tpop\n"; }
+
+void MipsTargetAsmStreamer::emitDirectiveSetPush() { OS << "\t.set\tpush\n"; }
+
 // Print a 32 bit hex number with all numbers.
 static void printHex32(unsigned Value, raw_ostream &OS) {
   OS << "0x";