[committed] Fix RTL frontend handling of const_vectors
Commit Message
The RTL frontend makes sure that CONST_INTs use shared rtxes where
appropriate. We should do the same thing for CONST_VECTORs,
reusing CONST0_RTX, CONST1_RTX and CONSTM1_RTX. This also has
the effect of setting CONST_VECTOR_NELTS_PER_PATTERN and
CONST_VECTOR_NPATTERNS.
While looking at where to add that, I noticed we had some dead #includes
in read-rtl.c. Some of the stuff that read-rtl-function.c does was once
in that file instead.
Tested on aarch64-linux-gnu and aarch64_be-elf. Applied as obvious.
Richard
gcc/
* read-rtl.c: Remove dead !GENERATOR_FILE block.
* read-rtl-function.c (function_reader::consolidate_singletons):
Generate canonical CONST_VECTORs.
---
gcc/read-rtl-function.c | 3 +++
gcc/read-rtl.c | 6 ------
2 files changed, 3 insertions(+), 6 deletions(-)
@@ -1498,6 +1498,9 @@ function_reader::consolidate_singletons (rtx x)
case CONST_INT:
return gen_rtx_CONST_INT (GET_MODE (x), INTVAL (x));
+ case CONST_VECTOR:
+ return gen_rtx_CONST_VECTOR (GET_MODE (x), XVEC (x, 0));
+
default:
break;
}
@@ -36,12 +36,6 @@ along with GCC; see the file COPYING3. If not see
#include "read-md.h"
#include "gensupport.h"
-#ifndef GENERATOR_FILE
-#include "function.h"
-#include "memmodel.h"
-#include "emit-rtl.h"
-#endif
-
/* One element in a singly-linked list of (integer, string) pairs. */
struct map_value {
struct map_value *next;