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[4/7,ARC] Make D0, D1 double regs fix when not used.

Message ID 1492172084-3921-5-git-send-email-claziss@synopsys.com
State New
Headers show

Commit Message

Claudiu Zissulescu April 14, 2017, 12:14 p.m. UTC 
gcc/
2016-12-09  Claudiu Zissulescu  <claziss@synopsys.com>

	* config/arc/arc.c (arc_conditional_register_usage): Make D0, D1
	double regs fix when not used.
---
 gcc/config/arc/arc.c | 5 +++++
 1 file changed, 5 insertions(+)
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Patch

diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 8a8ac86..f820622 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -1546,6 +1546,11 @@  arc_conditional_register_usage (void)
       arc_regno_reg_class[42] = ALL_REGS;
       arc_regno_reg_class[43] = ALL_REGS;
 
+      fixed_regs[40] = 1;
+      fixed_regs[41] = 1;
+      fixed_regs[42] = 1;
+      fixed_regs[43] = 1;
+
       arc_hard_regno_mode_ok[40] = 0;
       arc_hard_regno_mode_ok[42] = 0;