Fix va-arg-22.c at -O1 on m32r.

	PR rtl-optimization/92264
	* config/m32r/m32r.c (m32r_output_block_move): Properly account for
	post-increment addressing of source operands as well as residuals
	when computing any adjustments to the input pointer.

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 7083bbb9cce925c5652457ddce57ade3d59f013f..e9dfa71ec0e410949ce773f82bf40515a133c7fd 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,10 @@
+2020-04-03  Jeff Law  <law@redhat.com>
+
+       PR rtl-optimization/92264
+       * config/m32r/m32r.c (m32r_output_block_move): Properly account for
+       post-increment addressing of source operands as well as residuals
+       when computing any adjustments to the input pointer.
+
 2020-04-03  Jakub Jelinek  <jakub@redhat.com>
 
        PR target/94460

diff --git a/gcc/config/m32r/m32r.c b/gcc/config/m32r/m32r.c
index 1c0156095244e60a1bf234ec2df883f976a12d29..27fb495ed172c473e9e2da928e4249e662e017c4 100644 (file)
--- a/gcc/config/m32r/m32r.c
+++ b/gcc/config/m32r/m32r.c
@@ -2676,7 +2676,7 @@ m32r_output_block_move (rtx insn ATTRIBUTE_UNUSED, rtx operands[])
             destination pointer.  */
          int dst_inc_amount = dst_offset + bytes - 4;
          /* The same for the source pointer.  */
-         int src_inc_amount = bytes;
+         int src_inc_amount = bytes - (got_extra ? 4 : 0);
          int last_shift;
          rtx my_operands[3];