From: Andrew Pinski <apinski@cavium.com>
Date: Sat, 21 Jul 2012 11:05:04 +0000 (+0000)
Subject: mips.md (*popcountdi2_trunc): New pattern to handle popcount of a truncation.
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=c55963ebd6b75545dc9f79fd081c596ef5cbe568;p=gcc.git

mips.md (*popcountdi2_trunc): New pattern to handle popcount of a truncation.

2012-07-21  Andrew Pinski  <apinski@cavium.com>

	* config/mips/mips.md (*popcountdi2_trunc): New pattern
	to handle popcount of a truncation.

2012-07-21  Andrew Pinski  <apinski@cavium.com>

	* gcc.target/mips/octeon-pop-2.c: New testcase.

From-SVN: r189744
---

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 40277665f23..a2838d78727 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2012-07-21  Andrew Pinski  <apinski@cavium.com>
+
+	* config/mips/mips.md (*popcountdi2_trunc): New pattern
+	to handle popcount of a truncation.
+
 2012-07-21  Andrew Pinski  <apinski@cavium.com>
 
 	* config/mips/mips-protos.h (mips_expand_ext_as_unaligned_load):
diff --git a/gcc/config/mips/mips.md b/gcc/config/mips/mips.md
index 0edc9d94986..af741ba2b82 100644
--- a/gcc/config/mips/mips.md
+++ b/gcc/config/mips/mips.md
@@ -2643,6 +2643,16 @@
   "<d>pop\t%0,%1"
   [(set_attr "type" "pop")
    (set_attr "mode" "<MODE>")])
+
+;; The POP instruction is special as it does not take into account the upper
+;; 32bits and is documented that way.
+(define_insn "*popcountdi2_trunc"
+  [(set (match_operand:SI 0 "register_operand" "=d")
+       (popcount:SI (truncate:SI (match_operand:DI 1 "register_operand" "d"))))]
+  "ISA_HAS_POP && TARGET_64BIT"
+  "pop\t%0,%1"
+  [(set_attr "type" "pop")
+   (set_attr "mode" "SI")])
 
 ;;
 ;;  ....................
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 75aa1141404..3dd4fb86c80 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,7 @@
+2012-07-21  Andrew Pinski  <apinski@cavium.com>
+
+	* gcc.target/mips/octeon-pop-2.c: New testcase.
+
 2012-07-21  Tobias Burnus  <burnus@net-b.de>
 
 	PR fortran/48820
diff --git a/gcc/testsuite/gcc.target/mips/octeon-pop-2.c b/gcc/testsuite/gcc.target/mips/octeon-pop-2.c
new file mode 100644
index 00000000000..8acd9359752
--- /dev/null
+++ b/gcc/testsuite/gcc.target/mips/octeon-pop-2.c
@@ -0,0 +1,10 @@
+/* { dg-do compile } */
+/* { dg-options "-O -march=octeon -mgp64" } */
+/* The pop instruction does not depend on the word value to be sign extended. */
+/* { dg-final { scan-assembler-not "sll\t" } } */
+
+long long f(long long i)
+{
+  return __builtin_popcount (i);
+}
+