OpenE2K
/
gcc
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

re PR tree-optimization/68961 (Test case gcc.target/powerpc/pr60203.c fails since r231674) 

2016-06-29  Richard Biener  <rguenther@suse.de>

	PR rtl-optimization/68961
	* simplify-rtx.c (simplify_subreg): Handle VEC_CONCAT like CONCAT.

From-SVN: r237840
This commit is contained in:
Richard Biener 2016-06-29 07:52:35 +00:00 committed by Richard Biener
parent 4aa83879c9
commit 36d0d9be55
2 changed files with 14 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
gcc/ChangeLog
View File

@ -1,3 +1,8 @@
2016-06-29 Richard Biener <rguenther@suse.de>
PR rtl-optimization/68961
* simplify-rtx.c (simplify_subreg): Handle VEC_CONCAT like CONCAT.
2016-06-29 Richard Biener <rguenther@suse.de>
PR middle-end/71002

14
gcc/simplify-rtx.c
View File

@ -6108,9 +6108,10 @@ simplify_subreg (machine_mode outermode, rtx op,
&& GET_MODE_SIZE (outermode) <= GET_MODE_SIZE (GET_MODE (op)))
return adjust_address_nv (op, outermode, byte);
/* Handle complex values represented as CONCAT
of real and imaginary part. */
if (GET_CODE (op) == CONCAT)
/* Handle complex or vector values represented as CONCAT or VEC_CONCAT
of two parts. */
if (GET_CODE (op) == CONCAT
|| GET_CODE (op) == VEC_CONCAT)
{
unsigned int part_size, final_offset;
rtx part, res;
@ -6130,10 +6131,13 @@ simplify_subreg (machine_mode outermode, rtx op,
if (final_offset + GET_MODE_SIZE (outermode) > part_size)
return NULL_RTX;
res = simplify_subreg (outermode, part, GET_MODE (part), final_offset);
enum machine_mode part_mode = GET_MODE (part);
if (part_mode == VOIDmode)
part_mode = GET_MODE_INNER (GET_MODE (op));
res = simplify_subreg (outermode, part, part_mode, final_offset);
if (res)
return res;
if (validate_subreg (outermode, GET_MODE (part), part, final_offset))
if (validate_subreg (outermode, part_mode, part, final_offset))
return gen_rtx_SUBREG (outermode, part, final_offset);
return NULL_RTX;
}