From: Alan Modra <amodra@gmail.com>
Date: Sat, 10 Feb 2018 04:49:15 +0000 (+1030)
Subject: PR84300, ICE in dwarf2cfi on ppc64le with -fsplit-stack -fno-omit-frame-pointer
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=cb2e8560f9d446c60610934b8d28b810f8396189;p=gcc.git

PR84300, ICE in dwarf2cfi on ppc64le with -fsplit-stack -fno-omit-frame-pointer

	PR target/84300
gcc/
	* config/rs6000/rs6000.md (split_stack_return): Remove (use ..).
	Specify LR as an input.
gcc/testsuite/
	* gcc.dg/pr84300.c: New.

From-SVN: r257549
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 0ee4f1cf6b3..9e4682e7947 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,9 @@
+2018-02-10  Alan Modra  <amodra@gmail.com>
+
+	PR target/84300
+	* config/rs6000/rs6000.md (split_stack_return): Remove (use ..).
+	Specify LR as an input.
+
 2018-02-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/83987
diff --git a/gcc/config/rs6000/rs6000.md b/gcc/config/rs6000/rs6000.md
index 8aa4e0e7c71..5f44d80ef0e 100644
--- a/gcc/config/rs6000/rs6000.md
+++ b/gcc/config/rs6000/rs6000.md
@@ -13360,7 +13360,7 @@
 ;; Use r0 to stop regrename twiddling with lr restore insns emitted
 ;; after the call to __morestack.
 (define_insn "split_stack_return"
-  [(unspec_volatile [(use (reg:SI 0))] UNSPECV_SPLIT_STACK_RETURN)]
+  [(unspec_volatile [(reg:SI 0) (reg:SI LR_REGNO)] UNSPECV_SPLIT_STACK_RETURN)]
   ""
   "blr"
   [(set_attr "type" "jmpreg")])
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 1688f5a8aa2..e899f5653f4 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2018-02-10  Alan Modra  <amodra@gmail.com>
+
+	PR target/84300
+	* gcc.dg/pr84300.c: New.
+
 2018-02-10  Jakub Jelinek  <jakub@redhat.com>
 
 	PR sanitizer/83987
diff --git a/gcc/testsuite/gcc.dg/pr84300.c b/gcc/testsuite/gcc.dg/pr84300.c
new file mode 100644
index 00000000000..6016799a43f
--- /dev/null
+++ b/gcc/testsuite/gcc.dg/pr84300.c
@@ -0,0 +1,5 @@
+/* { dg-do compile } */
+/* { dg-require-effective-target split_stack } */
+/* { dg-options "-g -O2 -fsplit-stack -fno-omit-frame-pointer" } */
+
+void trap () { __builtin_trap (); }