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* [gcc r12-1104] Fix bug in the define_subst handling that made match_scratch unusable for multi-alternative patterns
@ 2021-05-28  6:34 Joern Rennecke
  0 siblings, 0 replies; only message in thread
From: Joern Rennecke @ 2021-05-28  6:34 UTC (permalink / raw)
  To: gcc-cvs

https://gcc.gnu.org/g:dd1ef00c45ba99ea10082f913c20319b1951defe

commit r12-1104-gdd1ef00c45ba99ea10082f913c20319b1951defe
Author: Joern Rennecke <joern.rennecke@embecosm.com>
Date:   Fri May 28 07:29:53 2021 +0100

    Fix bug in the define_subst handling that made match_scratch unusable for multi-alternative patterns.
    
    2021-05-28  Joern Rennecke  <joern.rennecke@embecosm.com>
    
    gcc/
            * gensupport.c (alter_constraints): Add MATCH_SCRATCH case.

Diff:
---
 gcc/gensupport.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/gcc/gensupport.c b/gcc/gensupport.c
index e1ca06dbc1e..4022c661adb 100644
--- a/gcc/gensupport.c
+++ b/gcc/gensupport.c
@@ -1291,6 +1291,9 @@ alter_constraints (rtx pattern, int n_dup, constraints_handler_t alter)
     case MATCH_OPERAND:
       XSTR (pattern, 2) = alter (XSTR (pattern, 2), n_dup);
       break;
+    case MATCH_SCRATCH:
+      XSTR (pattern, 1) = alter (XSTR (pattern, 1), n_dup);
+      break;
 
     default:
       break;


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