From: Jakub Jelinek <jakub@redhat.com>
Date: Fri, 30 Aug 2019 12:44:03 +0000 (+0200)
Subject: backport: re PR middle-end/90139 (ICE in emit_block_move_hints, at expr.c:1601)
X-Git-Tag: releases/gcc-7.5.0~207
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5aaa64db0a597f3ac549e5b00bfb4324007e9e81;p=thirdparty%2Fgcc.git

backport: re PR middle-end/90139 (ICE in emit_block_move_hints, at expr.c:1601)

	Backported from mainline
	2019-04-19  Jakub Jelinek  <jakub@redhat.com>

	PR middle-end/90139
	* tree-outof-ssa.c (get_temp_reg): If reg_mode is BLKmode, return
	assign_temp instead of gen_reg_rtx.

	* gcc.c-torture/compile/pr90139.c: New test.

From-SVN: r275156
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2e41dffc42c4..eef46307e2f7 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,6 +1,12 @@
 2019-08-30  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2019-04-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/90139
+	* tree-outof-ssa.c (get_temp_reg): If reg_mode is BLKmode, return
+	assign_temp instead of gen_reg_rtx.
+
 	2019-06-11  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/90811
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 0a714e310292..1a50c4092001 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,6 +1,11 @@
 2019-08-30  Jakub Jelinek  <jakub@redhat.com>
 
 	Backported from mainline
+	2019-04-19  Jakub Jelinek  <jakub@redhat.com>
+
+	PR middle-end/90139
+	* gcc.c-torture/compile/pr90139.c: New test.
+
 	2019-04-24  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/90187
diff --git a/gcc/testsuite/gcc.c-torture/compile/pr90139.c b/gcc/testsuite/gcc.c-torture/compile/pr90139.c
new file mode 100644
index 000000000000..f3d99f04c866
--- /dev/null
+++ b/gcc/testsuite/gcc.c-torture/compile/pr90139.c
@@ -0,0 +1,20 @@
+/* PR middle-end/90139 */
+
+typedef float __attribute__((vector_size (sizeof (float)))) V;
+void bar (int, V *);
+int l;
+
+void
+foo (void)
+{
+  V n, b, o;
+  while (1)
+    switch (l)
+      {
+      case 0:
+	o = n;
+	n = b;
+	b = o;
+	bar (1, &o);
+      }
+}
diff --git a/gcc/tree-outof-ssa.c b/gcc/tree-outof-ssa.c
index 0ce6c155bd32..fc488ca68cbb 100644
--- a/gcc/tree-outof-ssa.c
+++ b/gcc/tree-outof-ssa.c
@@ -651,6 +651,8 @@ get_temp_reg (tree name)
   tree type = TREE_TYPE (name);
   int unsignedp;
   machine_mode reg_mode = promote_ssa_mode (name, &unsignedp);
+  if (reg_mode == BLKmode)
+    return assign_temp (type, 0, 0);
   rtx x = gen_reg_rtx (reg_mode);
   if (POINTER_TYPE_P (type))
     mark_reg_pointer (x, TYPE_ALIGN (TREE_TYPE (type)));