From: Jim Wilson <wilson@gcc.gnu.org>
Date: Tue, 2 Mar 1993 21:02:47 +0000 (-0800)
Subject: (call_internal*): Use hard register 19 (r3) in clobber
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=b6744f97de92a964f6d3635d6b63050bf03c2bfd;p=gcc.git

(call_internal*): Use hard register 19 (r3) in clobber
instead of match_scratch.

From-SVN: r3604
---

diff --git a/gcc/config/i960/i960.md b/gcc/config/i960/i960.md
index c42a3f9ef3f..14b05de861e 100644
--- a/gcc/config/i960/i960.md
+++ b/gcc/config/i960/i960.md
@@ -2154,14 +2154,19 @@
 ;; We need a call saved register allocated for the match_scratch, so we use
 ;; 'l' because all local registers are call saved.
 
+;; ??? I would prefer to use a match_scratch here, but match_scratch allocated
+;; registers can't be used for spills.  In a function with lots of calls,
+;; local-alloc may allocate all local registers to a match_scratch, leaving
+;; no local registers available for spills.
+
 (define_insn "call_internal"
   [(call (match_operand:SI 0 "general_operand" "g")
 	 (match_operand:SI 1 "immediate_operand" "i"))
    (use (match_operand:SI 2 "address_operand" "p"))
-   (clobber (match_scratch:SI 3 "=&l"))]
+   (clobber (reg:SI 19))]
   ""
   "* return i960_output_call_insn (operands[0], operands[1], operands[2],
-				   operands[3], insn);"
+				   insn);"
   [(set_attr "type" "call")])
 
 (define_expand "call_value"
@@ -2184,10 +2189,10 @@
 	(call (match_operand:SI 1 "general_operand" "g")
 	      (match_operand:SI 2 "immediate_operand" "i")))
    (use (match_operand:SI 3 "address_operand" "p"))
-   (clobber (match_scratch:SI 4 "=&l"))]
+   (clobber (reg:SI 19))]
   ""
   "* return i960_output_call_insn (operands[1], operands[2], operands[3],
-				   operands[4], insn);"
+				   insn);"
   [(set_attr "type" "call")])
 
 (define_insn "return"