From: Wilco Dijkstra <wdijkstr@arm.com>
Date: Mon, 14 Aug 2017 11:18:50 +0000 (+0000)
Subject: Add check_effective_target_autoincdec.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=5316dd1b63913e390fb2a5d7b335aeacd9da3001;p=gcc.git

Add check_effective_target_autoincdec.

Add check_effective_target_autoincdec that returns true if a target
runs the auto_inc_dec optimization pass.

    gcc/
	* doc/sourcebuild.texi (autoincdec): Add autoincdec description.

    gcc/testsuite/
	PR middle-end/46932
	* gcc.dg/pr46932.c: Use dg-require-effective-target autoincdec.
	* lib/target-supports.exp: Add check_effective_target_autoincdec.

From-SVN: r251087
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 5fe0a90a15c..19bb575bf8f 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2017-08-14  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	PR middle-end/46932
+	* doc/sourcebuild.texi (autoincdec): Add autoincdec description.
+
 2017-08-14  Georg-Johann Lay  <avr@gjlay.de>
 
 	PR target/81754
diff --git a/gcc/doc/sourcebuild.texi b/gcc/doc/sourcebuild.texi
index 85af8778167..e6313dc031e 100644
--- a/gcc/doc/sourcebuild.texi
+++ b/gcc/doc/sourcebuild.texi
@@ -1846,6 +1846,9 @@ PowerPC target supports executing VSX instructions (ISA 2.06).
 
 @c Please keep this table sorted alphabetically.
 @table @code
+@item autoincdec
+Target supports autoincrement/decrement addressing.
+
 @item avx
 Target supports compiling @code{avx} instructions.
 
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index b6f6f1d01e9..8995806e289 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,9 @@
+2017-08-14  Wilco Dijkstra  <wdijkstr@arm.com>
+
+	PR middle-end/46932
+	* gcc.dg/pr46932.c: Use dg-require-effective-target autoincdec.
+	* lib/target-supports.exp: Add check_effective_target_autoincdec.
+
 2017-08-14  Szabolcs Nagy  <szabolcs.nagy@arm.com>
 
 	* gcc.target/aarch64/dbl_mov_immediate_1.c: Add
diff --git a/gcc/testsuite/gcc.dg/pr46932.c b/gcc/testsuite/gcc.dg/pr46932.c
index 4eb1a99e1bd..2b39990d036 100644
--- a/gcc/testsuite/gcc.dg/pr46932.c
+++ b/gcc/testsuite/gcc.dg/pr46932.c
@@ -1,7 +1,5 @@
 /* { dg-options "-O2 -fdump-rtl-auto_inc_dec" } */
-
-/* Build on targets which have pre increment.  */
-/* { dg-do compile { target aarch64*-*-* arm*-*-* rs6000-*-* powerpc*-*-* arc*-*-* m32r-*-* tic6x-*-* } } */
+/* { dg-require-effective-target autoincdec } */
 
 /* Check that accesses based on the frame pointer do not
    use auto increment.  */
diff --git a/gcc/testsuite/lib/target-supports.exp b/gcc/testsuite/lib/target-supports.exp
index 5a6562794b2..5219fbf4671 100644
--- a/gcc/testsuite/lib/target-supports.exp
+++ b/gcc/testsuite/lib/target-supports.exp
@@ -8482,3 +8482,18 @@ proc check_effective_target_arm_coproc4_ok { } {
     return [check_cached_effective_target arm_coproc4_ok \
 		check_effective_target_arm_coproc4_ok_nocache]
 }
+
+# Return 1 if the target supports the auto_inc_dec optimization pass.
+proc check_effective_target_autoincdec { } {
+    if { ![check_no_compiler_messages auto_incdec assembly { void f () { }
+	 } "-O2 -fdump-rtl-auto_inc_dec" ] } {
+      return 0
+    }
+
+    set dumpfile [glob -nocomplain "auto_incdec[pid].c.\[0-9\]\[0-9\]\[0-9\]r.auto_inc_dec"]
+    if { [file exists $dumpfile ] } {
+	file delete $dumpfile
+	return 1
+    }
+    return 0
+}