diff mbox

Fix PR79970

Message ID alpine.LSU.2.20.1703091416411.30051@zhemvz.fhfr.qr
State New
Headers show

Commit Message

Richard Biener March 9, 2017, 1:17 p.m. UTC 
Bootstrapped and tested on x86_64-unknown-linux-gnu, applied.

Richard.

2017-03-09  Richard Biener  <rguenther@suse.de>

	PR ipa/79970
	* ipa-prop.c (ipa_modify_formal_parameters): Avoid changing
	alignment of BLKmode params.

	* gcc.dg/torture/pr79970.c: New testcase.
diff mbox

Patch

Index: gcc/ipa-prop.c
===================================================================
--- gcc/ipa-prop.c	(revision 245987)
+++ gcc/ipa-prop.c	(working copy)
@@ -4198,7 +4198,8 @@ 
 	  else
 	    {
 	      ptype = adj->type;
-	      if (is_gimple_reg_type (ptype))
+	      if (is_gimple_reg_type (ptype)
+		  && TYPE_MODE (ptype) != BLKmode)
 		{
 		  unsigned malign = GET_MODE_ALIGNMENT (TYPE_MODE (ptype));
 		  if (TYPE_ALIGN (ptype) != malign)
Index: gcc/testsuite/gcc.dg/torture/pr79970.c
===================================================================
--- gcc/testsuite/gcc.dg/torture/pr79970.c	(revision 0)
+++ gcc/testsuite/gcc.dg/torture/pr79970.c	(working copy)
@@ -0,0 +1,23 @@ 
+/* { dg-do compile } */
+/* { dg-skip-if "" { *-*-* } { "-flto" } { "" } } */
+/* { dg-additional-options "-mno-sse" { target x86_64-*-* i?86-*-* } } */
+
+typedef int c __attribute__ ((__vector_size__ (16)));
+
+__attribute__((always_inline)) void d (void); /* { dg-warning "" } { dg-error 7 "inlining failed" } */
+void f(c x);
+
+inline void e (c *b) {
+    f (*b);
+}
+
+void a ()
+{
+  struct
+    {
+      c g[4];
+    } h;
+  d ();
+  e (h.g);
+}
+