From 628162eabeaddc4079107d467a55b1d0362e5cbd Mon Sep 17 00:00:00 2001
From: Jakub Jelinek <jakub@redhat.com>
Date: Mon, 6 Dec 2010 20:31:57 +0100
Subject: [PATCH] re PR target/43897 (IA-64 asm clobbers are ignored)
PR target/43897
* config/ia64/ia64.c (rtx_needs_barrier): Handle asm CLOBBER
as a store into that register.
* gcc.target/ia64/pr43897.c: New test.
From-SVN: r167516
---
gcc/ChangeLog | 4 ++++
gcc/config/ia64/ia64.c | 11 +++++++++++
gcc/testsuite/ChangeLog | 3 +++
gcc/testsuite/gcc.target/ia64/pr43897.c | 12 ++++++++++++
4 files changed, 30 insertions(+)
create mode 100644 gcc/testsuite/gcc.target/ia64/pr43897.c
diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 48c60c039c32..cc1d2c6f05eb 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,5 +1,9 @@
2010-12-06 Jakub Jelinek <jakub@redhat.com>
+ PR target/43897
+ * config/ia64/ia64.c (rtx_needs_barrier): Handle asm CLOBBER
+ as a store into that register.
+
PR tree-optimization/46528
PR debug/46338
* profile.c (branch_prob): Make sure last is never set to a debug
diff --git a/gcc/config/ia64/ia64.c b/gcc/config/ia64/ia64.c
index 0c2d20eaf6e0..f789d00ebc66 100644
--- a/gcc/config/ia64/ia64.c
+++ b/gcc/config/ia64/ia64.c
@@ -6320,6 +6320,17 @@ rtx_needs_barrier (rtx x, struct reg_flags flags, int pred)
break;
case CLOBBER:
+ if (REG_P (XEXP (pat, 0))
+ && extract_asm_operands (x) != NULL_RTX
+ && REGNO (XEXP (pat, 0)) != AR_UNAT_REGNUM)
+ {
+ new_flags.is_write = 1;
+ need_barrier |= rtx_needs_barrier (XEXP (pat, 0),
+ new_flags, pred);
+ new_flags = flags;
+ }
+ break;
+
case RETURN:
break;
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index f64afd425725..b0ed62160eac 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,5 +1,8 @@
2010-12-06 Jakub Jelinek <jakub@redhat.com>
+ PR target/43897
+ * gcc.target/ia64/pr43897.c: New test.
+
PR debug/46771
* gcc.dg/pr46771.c: New test.
diff --git a/gcc/testsuite/gcc.target/ia64/pr43897.c b/gcc/testsuite/gcc.target/ia64/pr43897.c
new file mode 100644
index 000000000000..fb73e86923aa
--- /dev/null
+++ b/gcc/testsuite/gcc.target/ia64/pr43897.c
@@ -0,0 +1,12 @@
+/* PR target/43897 */
+/* { dg-do assemble } */
+/* { dg-options "-O2" } */
+
+int
+sub (int i)
+{
+ float tmp;
+ if (i)
+ __asm__ __volatile__ ("frcpa.s0 %0,p1=f0,f0":"=f" (tmp)::"p1");
+ return i + 10;
+}