re PR rtl-optimization/22239 (i-cobol.adb:482: error: unrecognizable insn)

	PR middle-end/22239
	* loop.c (loop_givs_rescan): Check that v->new_reg is a REG.

From-SVN: r101742

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 128a7d2dae876094d38b2a3530bab716e25a0201..fd0abeb1f06e4d192db4c7a48e5173e00fc3db74 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2005-07-07  John David Anglin  <dave.anglin@nrc-crc.gc.ca>
+
+       PR middle-end/22239
+       * loop.c (loop_givs_rescan): Check that v->new_reg is a REG.
+
 2005-07-07  Khem Raj  <kraj@mvista.com>
 
        * config/arm/arm.c (thumb_output_function_prologue): Calculate offset

diff --git a/gcc/loop.c b/gcc/loop.c
index b9b285648bc3ebc6b160c635383505301a55e53a..c0e3272e6d383bb16e0397b85bad948378025521 100644 (file)
--- a/gcc/loop.c
+++ b/gcc/loop.c
@@ -5496,6 +5496,7 @@ loop_givs_rescan (struct loop *loop, struct iv_class *bl, rtx *reg_map)
                                                  v->new_reg));
          else if (GET_CODE (*v->location) == PLUS
                   && REG_P (XEXP (*v->location, 0))
+                  && REG_P (v->new_reg)
                   && CONSTANT_P (XEXP (*v->location, 1)))
            loop_insn_emit_before (loop, 0, v->insn,
                                   gen_move_insn (XEXP (*v->location, 0),