From: David S. Miller <davem@davemloft.net>
Date: Mon, 12 Jun 2017 19:30:45 +0000 (+0000)
Subject: More refinements to fixing sparc's PR target/80968.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=6d1ea02a6c3423a000c0d894b2ff673757042398;p=gcc.git

More refinements to fixing sparc's PR target/80968.

gcc/

	PR target/80968
	* config/sparc/sparc.md (return expander): Emit frame blockage if
	function uses alloca.

From-SVN: r249134
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index cc5435d54a6..9be291e3d2a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2017-06-12  David S. Miller  <davem@davemloft.net>
+
+	PR target/80968
+	* config/sparc/sparc.md (return expander): Emit frame blockage if
+	function uses alloca.
+
 2017-06-12  Richard Sandiford  <richard.sandiford@linaro.org>
 
 	* combine.c (make_field_assignment): Check len rather than the mode
diff --git a/gcc/config/sparc/sparc.md b/gcc/config/sparc/sparc.md
index 737bdb37543..5c5096bca2a 100644
--- a/gcc/config/sparc/sparc.md
+++ b/gcc/config/sparc/sparc.md
@@ -7098,7 +7098,10 @@
 (define_expand "return"
   [(return)]
   "sparc_can_use_return_insn_p ()"
-  "")
+{
+  if (cfun->calls_alloca)
+    emit_insn (gen_frame_blockage ());
+})
 
 (define_insn "*return_internal"
   [(return)]