rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.

gcc/ * rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK. From-SVN: r139207

rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.
gcc/ * rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK. From-SVN: r139207
808cc417 · Richard Sandiford · Richard Sandiford · b7e2f896 · 808cc417 · 808cc417
Commit 808cc417 authored Aug 18, 2008 by Richard Sandiford Committed by Richard Sandiford Aug 18, 2008
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gcc/ChangeLog
+4 -0

gcc/rtlanal.c
+2 -1

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--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
+2008-08-18  Richard Sandiford  <rdsandiford@googlemail.com>
+	* rtlanal.c (subreg_offset_representable_p): Check HARD_REGNO_MODE_OK.
 2008-08-18  Tomas Bily  <tbily@suse.cz>
 	* tree.h (IS_CONVERT_EXPR_CODE_P): Renamed to CONVERT_EXPR_CODE_P.

--- a/gcc/rtlanal.c
+++ b/gcc/rtlanal.c
@@ -3241,7 +3241,8 @@ subreg_offset_representable_p (unsigned int xregno, enum machine_mode xmode,
 {
  struct subreg_info info;
  subreg_get_info (xregno, xmode, offset, ymode, &info);
-  return info.representable_p;
+  return (info.representable_p
+	  && HARD_REGNO_MODE_OK (xregno + info.offset, ymode));
 }
 /* Return the final regno that a subreg expression refers to.  */