From: Eric Botcazou <ebotcazou@gcc.gnu.org>
Date: Fri, 4 Dec 2015 18:25:54 +0000 (+0000)
Subject: re PR middle-end/65958 (-fstack-check breaks alloca on architectures using generic... 
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=f58101cf288f731c7ca5598d14254940cd8d0e8a;p=gcc.git

re PR middle-end/65958 (-fstack-check breaks alloca on architectures using generic stack checking)

	PR middle-end/65958
	* config/arm/unspecs.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
	(unspecv): Add VUNSPEC_PROBE_STACK_RANGE.
	* config/arm/arm.md (probe_stack_range): Adjust.
	* config/aarch64/aarch64.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
	(unspecv): Add UNSPECV_PROBE_STACK_RANGE.
	(probe_stack_range_<PTR:mode>): Adjust.

From-SVN: r231295
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 9aba352870c..39420b13165 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,13 @@
+2015-12-04  Eric Botcazou  <ebotcazou@adacore.com>
+
+	PR middle-end/65958
+	* config/arm/unspecs.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
+	(unspecv): Add VUNSPEC_PROBE_STACK_RANGE.
+	* config/arm/arm.md (probe_stack_range): Adjust.
+	* config/aarch64/aarch64.md (unspec): Remove UNSPEC_PROBE_STACK_RANGE.
+	(unspecv): Add UNSPECV_PROBE_STACK_RANGE.
+	(probe_stack_range_<PTR:mode>): Adjust.
+
 2015-12-04  David Malcolm  <dmalcolm@redhat.com>
 
 	* convert.c (convert_to_real_1): When converting from a
@@ -309,8 +319,8 @@
 
 2015-12-03  Jan Hubicka  <hubicka@ucw.cz>
 
-	* alias.c (alias_set_subset_of, alias_sets_must_conflict_p)
-	Short circuit for !flag_strict_aliasing
+	* alias.c (alias_set_subset_of, alias_sets_must_conflict_p):
+	Add short circuit for !flag_strict_aliasing
 	(get_alias_set): Remove flag_strict_aliasing check.
 	(new_alias_set): Likewise.
 
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index f5a8ae7900a..dee757b8207 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -104,7 +104,6 @@
     UNSPEC_MB
     UNSPEC_NOP
     UNSPEC_PRLG_STK
-    UNSPEC_PROBE_STACK_RANGE
     UNSPEC_RBIT
     UNSPEC_SISD_NEG
     UNSPEC_SISD_SSHL
@@ -139,6 +138,7 @@
     UNSPECV_GET_FPSR		; Represent fetch of FPSR content.
     UNSPECV_SET_FPSR		; Represent assign of FPSR content.
     UNSPECV_BLOCKAGE		; Represent a blockage
+    UNSPECV_PROBE_STACK_RANGE	; Represent stack range probing.
   ]
 )
 
@@ -4968,7 +4968,7 @@
   [(set (match_operand:PTR 0 "register_operand" "=r")
 	(unspec_volatile:PTR [(match_operand:PTR 1 "register_operand" "0")
 			      (match_operand:PTR 2 "register_operand" "r")]
-			       UNSPEC_PROBE_STACK_RANGE))]
+			       UNSPECV_PROBE_STACK_RANGE))]
   ""
 {
   return aarch64_output_probe_stack_range (operands[0], operands[2]);
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 1462a31af9c..a742d8f8cbb 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -8149,7 +8149,7 @@
   [(set (match_operand:SI 0 "register_operand" "=r")
 	(unspec_volatile:SI [(match_operand:SI 1 "register_operand" "0")
 			     (match_operand:SI 2 "register_operand" "r")]
-			     UNSPEC_PROBE_STACK_RANGE))]
+			     VUNSPEC_PROBE_STACK_RANGE))]
   "TARGET_32BIT"
 {
   return output_probe_stack_range (operands[0], operands[2]);
diff --git a/gcc/config/arm/unspecs.md b/gcc/config/arm/unspecs.md
index 44d4e7dae8a..67acafd075f 100644
--- a/gcc/config/arm/unspecs.md
+++ b/gcc/config/arm/unspecs.md
@@ -84,7 +84,6 @@
   UNSPEC_VRINTA         ; Represent a float to integral float rounding
                         ; towards nearest, ties away from zero.
   UNSPEC_PROBE_STACK    ; Probe stack memory reference
-  UNSPEC_PROBE_STACK_RANGE ; Probe stack range
 ])
 
 (define_c_enum "unspec" [
@@ -147,6 +146,7 @@
   VUNSPEC_STL		; Represent a store-register-release.
   VUNSPEC_GET_FPSCR	; Represent fetch of FPSCR content.
   VUNSPEC_SET_FPSCR	; Represent assign of FPSCR content.
+  VUNSPEC_PROBE_STACK_RANGE ; Represent stack range probing.
 ])
 
 ;; Enumerators for NEON unspecs.