From: Akira Hatanaka <ahatanak@gmail.com>
Date: Thu, 11 Aug 2011 22:42:31 +0000 (+0000)
Subject: Enclose directive .cprestore with .set macro and nomacro to silence assembler
X-Git-Url: http://plrg.eecs.uci.edu/git/?a=commitdiff_plain;h=9029cf20e1158dbca9c95da72a646d467e871525;p=oota-llvm.git

Enclose directive .cprestore with .set macro and nomacro to silence assembler
warning.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@137378 91177308-0d34-0410-b5e6-96231b3b80d8
---

diff --git a/lib/Target/Mips/MipsFrameLowering.cpp b/lib/Target/Mips/MipsFrameLowering.cpp
index 8b4e23876e8..22d1e47b1a2 100644
--- a/lib/Target/Mips/MipsFrameLowering.cpp
+++ b/lib/Target/Mips/MipsFrameLowering.cpp
@@ -254,9 +254,15 @@ void MipsFrameLowering::emitPrologue(MachineFunction &MF) const {
   }
 
   // Restore GP from the saved stack location
-  if (MipsFI->needGPSaveRestore())
-    BuildMI(MBB, MBBI, dl, TII.get(Mips::CPRESTORE))
-      .addImm(MFI->getObjectOffset(MipsFI->getGPFI()));
+  if (MipsFI->needGPSaveRestore()) {
+    unsigned Offset = MFI->getObjectOffset(MipsFI->getGPFI());
+    BuildMI(MBB, MBBI, dl, TII.get(Mips::CPRESTORE)).addImm(Offset);
+
+    if (Offset >= 0x8000) {
+      BuildMI(MBB, llvm::prior(MBBI), dl, TII.get(Mips::MACRO));
+      BuildMI(MBB, MBBI, dl, TII.get(Mips::NOMACRO));
+    }
+  }
 }
 
 void MipsFrameLowering::emitEpilogue(MachineFunction &MF,
diff --git a/test/CodeGen/Mips/cprestore.ll b/test/CodeGen/Mips/cprestore.ll
new file mode 100644
index 00000000000..a275c8b7a55
--- /dev/null
+++ b/test/CodeGen/Mips/cprestore.ll
@@ -0,0 +1,16 @@
+; RUN: llc -march=mipsel < %s | FileCheck %s
+
+; CHECK: .set macro
+; CHECK-NEXT: .cprestore
+; CHECK-NEXT: .set nomacro
+
+%struct.S = type { [16384 x i32] }
+
+define void @foo2() nounwind {
+entry:
+  %s = alloca %struct.S, align 4
+  call void @foo1(%struct.S* byval %s)
+  ret void
+}
+
+declare void @foo1(%struct.S* byval)