From ee88ae68b6ba5bf1f3a6299e4d8f6d14c5b0a70d Mon Sep 17 00:00:00 2001
From: roland <unknown>
Date: Wed, 7 Sep 2011 09:35:52 +0200
Subject: [PATCH] 7086394: c2/arm: enable UseFPUForSpilling Summary: ARM has
 instructions to move data directly between the fpu and integer registers.
 Reviewed-by: kvn, never

---
 src/share/vm/opto/matcher.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/share/vm/opto/matcher.cpp b/src/share/vm/opto/matcher.cpp
index 4b16bbad2..3244a944b 100644
--- a/src/share/vm/opto/matcher.cpp
+++ b/src/share/vm/opto/matcher.cpp
@@ -501,6 +501,12 @@ void Matcher::init_first_stack_mask() {
      idealreg2spillmask[Op_RegP]->OR(*idealreg2regmask[Op_RegD]);
 #else
      idealreg2spillmask[Op_RegP]->OR(*idealreg2regmask[Op_RegF]);
+#ifdef ARM
+     // ARM has support for moving 64bit values between a pair of
+     // integer registers and a double register
+     idealreg2spillmask[Op_RegL]->OR(*idealreg2regmask[Op_RegD]);
+     idealreg2spillmask[Op_RegD]->OR(*idealreg2regmask[Op_RegL]);
+#endif
 #endif
    }
 
-- 
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