From: Jiong Wang <jiong.wang@arm.com>
Date: Thu, 6 Aug 2015 16:02:16 +0000 (+0000)
Subject: [AArch64] Tighten direct call pattern for sibcall to repair -fno-plt
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=201fa0b3a0a4aaf53ec0bcd154f40e2f63a8d960;p=gcc.git

[AArch64] Tighten direct call pattern for sibcall to repair -fno-plt

2015-08-06  Jiong Wang  <jiong.wang@arm.com>

gcc/
  * config/aarch64/constraints.md (Usf): Add the test of
  aarch64_is_noplt_call_p.

gcc/testsuite/
  * gcc.target/aarch64/noplt_3.c: New testcase.

From-SVN: r226682
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2b364ce83b9..795867a1656 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-08-06  Jiong Wang  <jiong.wang@arm.com>
+
+	* config/aarch64/constraints.md (Usf): Add the test of
+	aarch64_is_noplt_call_p.
+
 2015-08-06  Jiong Wang  <jiong.wang@arm.com>
 
 	* config/aarch64/aarch64-protos.h (aarch64_is_noplt_call_p): New declaration.
diff --git a/gcc/config/aarch64/constraints.md b/gcc/config/aarch64/constraints.md
index 5b189ea9d46..9dc21089154 100644
--- a/gcc/config/aarch64/constraints.md
+++ b/gcc/config/aarch64/constraints.md
@@ -101,8 +101,9 @@
        (match_test "(unsigned HOST_WIDE_INT) ival < 64")))
 
 (define_constraint "Usf"
-  "@internal Usf is a symbol reference."
-  (match_code "symbol_ref"))
+  "@internal Usf is a symbol reference under the context where plt stub allowed."
+  (and (match_code "symbol_ref")
+       (match_test "!aarch64_is_noplt_call_p (op)")))
 
 (define_constraint "UsM"
   "@internal
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index fb3bf07f58f..0cd004b4c1d 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2015-08-06  Jiong Wang  <jiong.wang@arm.com>
+
+	* gcc.target/aarch64/noplt_3.c: New testcase.
+
 2015-08-06  Jiong Wang  <jiong.wang@arm.com>
 
 	* gcc.target/aarch64/noplt_1.c: New testcase.
diff --git a/gcc/testsuite/gcc.target/aarch64/noplt_3.c b/gcc/testsuite/gcc.target/aarch64/noplt_3.c
new file mode 100644
index 00000000000..c1993b670a6
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/noplt_3.c
@@ -0,0 +1,20 @@
+/* { dg-do compile } */
+/* { dg-options "-O2 -fpic -fno-plt" } */
+/* { dg-skip-if "-mcmodel=large, no support for -fpic" { aarch64-*-* }  { "-mcmodel=large" } { "" } } */
+
+int dec (int);
+
+int
+cal (int a)
+{
+  return dec (a);
+}
+
+void
+cal_novalue (int a)
+{
+  dec (a);
+}
+
+/* { dg-final { scan-assembler-times "#:got:" 2 { target { aarch64_tiny || aarch64_small } } } } */
+/* { dg-final { scan-assembler-times "#:got_lo12:" 2 { target aarch64_small } } } */