From: Richard Sandiford <richard.sandiford@arm.com>
Date: Fri, 12 Feb 2021 15:54:49 +0000 (+0000)
Subject: rtl-ssa: Use right obstack for temporary allocation
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=adfee3c4c03dd70a06f6283178d7943b09652206;p=gcc.git

rtl-ssa: Use right obstack for temporary allocation

I noticed while working on PR98863 that we were using the main
obstack to allocate temporary uses.  That was safe, but represents
a kind of local memory leak.

gcc/
	* rtl-ssa/accesses.cc (function_info::make_use_available): Use
	m_temp_obstack rather than m_obstack to allocate the temporary use.
---

diff --git a/gcc/rtl-ssa/accesses.cc b/gcc/rtl-ssa/accesses.cc
index 992a54c29a2..5023d55852f 100644
--- a/gcc/rtl-ssa/accesses.cc
+++ b/gcc/rtl-ssa/accesses.cc
@@ -1290,7 +1290,7 @@ function_info::make_use_available (use_info *use, bb_info *bb)
 	  // Create a temporary placeholder phi.  This will become
 	  // permanent if the change is later committed.
 	  phi = allocate_temp<phi_info> (phi_insn, resource, 0);
-	  auto *input = allocate<use_info> (phi, resource, ultimate_def);
+	  auto *input = allocate_temp<use_info> (phi, resource, ultimate_def);
 	  input->m_is_temp = true;
 	  phi->m_is_temp = true;
 	  phi->make_degenerate (input);