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* [PATCH 11/12] ipa-sra: Make scan_expr_access bail out on uninteresting expressions
@ 2022-11-12  1:47 Martin Jambor
  0 siblings, 0 replies; only message in thread
From: Martin Jambor @ 2022-11-12  1:47 UTC (permalink / raw)
  To: GCC Patches; +Cc: Jan Hubicka, Jan Hubicka


I have noticed that scan_expr_access passes all the expressions it
gets to get_ref_base_and_extent even when we are really only
interested in memory accesses.  So bail out when the expression is
something clearly uninteresting.

Bootstrapped and tested on x86_64-linux.  OK for master?




2021-12-14  Martin Jambor  <>

	* ipa-sra.c (scan_expr_access): Bail out early if expr is something we
	clearly do not need to pass to get_ref_base_and_extent.
 gcc/ | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/gcc/ b/gcc/
index 93fceeafc73..3646d71468c 100644
--- a/gcc/
+++ b/gcc/
@@ -1748,6 +1748,11 @@ scan_expr_access (tree expr, gimple *stmt, isra_scan_context ctx,
       || TREE_CODE (expr) == REALPART_EXPR)
     expr = TREE_OPERAND (expr, 0);
+  if (!handled_component_p (expr)
+      && !DECL_P (expr)
+      && TREE_CODE (expr) != MEM_REF)
+    return;
   base = get_ref_base_and_extent (expr, &poffset, &psize, &pmax_size, &reverse);
   if (TREE_CODE (base) == MEM_REF)

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