global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input.

gcc/ * global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input. From-SVN: r131676

global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input.
gcc/ * global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per input. From-SVN: r131676
ecff8c1c · Richard Sandiford · Richard Sandiford · f2d3cb25 · ecff8c1c · ecff8c1c
Commit ecff8c1c authored Jan 20, 2008 by Richard Sandiford Committed by Richard Sandiford Jan 20, 2008
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gcc/ChangeLog
+5 -0

gcc/global.c
+7 -2

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2008-01-20  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	* global.c (find_reg): Only compute EH_RETURN_DATA_REGNO once per
+	input.
+
 2008-01-19  Kenneth Zadeck <zadeck@naturalbridge.com>

 	PR rtl-optimization/26854

--- a/gcc/global.c
+++ b/gcc/global.c
@@ -1016,8 +1016,13 @@ find_reg (int num, HARD_REG_SET losers, int alt_regs_p, int accept_call_clobbere
  if (allocno[num].no_eh_reg)
    {
      unsigned int j;
-      for (j = 0; EH_RETURN_DATA_REGNO (j) != INVALID_REGNUM; j++)
-	SET_HARD_REG_BIT (used1, EH_RETURN_DATA_REGNO (j));
+      for (j = 0; ; ++j)
+	{
+	  unsigned int regno = EH_RETURN_DATA_REGNO (j);
+	  if (regno == INVALID_REGNUM)
+	    break;
+	  SET_HARD_REG_BIT (used1, regno);
+	}
    }
 #endif