arm.md (andsi_not_shiftsi_si_scc): New pattern.

gcc/config

2015-05-18  Alex Velenko  <Alex.Velenko@arm.com>

  	* arm/arm.md (andsi_not_shiftsi_si_scc): New pattern.
  	(andsi_not_shiftsi_si_scc_no_reuse): New pattern.

gcc/testsuite

2015-05-18  Alex Velenko <Alex.Velenko@arm.com>

  	* gcc.target/arm/bics_1.c : New testcase.
  	* gcc.target/arm/bics_2.c : New testcase.
  	* gcc.target/arm/bics_3.c : New testcase.
  	* gcc.target/arm/bics_4.c : New testcase.

From-SVN: r223295

7 files changed, 262 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 27b4d26..e82485b 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2015-05-18  Alex Velenko  <Alex.Velenko@arm.com>
+
+	* config/arm/arm.md (andsi_not_shiftsi_si_scc): New pattern.
+	(andsi_not_shiftsi_si_scc_no_reuse): New pattern.
+
 2015-05-18  Robert Suchanek  <robert.suchanek@imgtec.com>
 
 	* config/mips/mips.c (micromips_globals): New variable.
diff --git a/gcc/config/arm/arm.md b/gcc/config/arm/arm.md
index 9a71b79..191f5e7 100644
--- a/gcc/config/arm/arm.md
+++ b/gcc/config/arm/arm.md
@@ -2783,6 +2783,55 @@
 		      (const_string "logic_shift_reg")))]
 )
 
+;; Shifted bics pattern used to set up CC status register and not reusing
+;; bics output.  Pattern restricts Thumb2 shift operand as bics for Thumb2
+;; does not support shift by register.
+(define_insn "andsi_not_shiftsi_si_scc_no_reuse"
+  [(set (reg:CC_NOOV CC_REGNUM)
+	(compare:CC_NOOV
+		(and:SI (not:SI (match_operator:SI 0 "shift_operator"
+			[(match_operand:SI 1 "s_register_operand" "r")
+			 (match_operand:SI 2 "arm_rhs_operand" "rM")]))
+			(match_operand:SI 3 "s_register_operand" "r"))
+		(const_int 0)))
+   (clobber (match_scratch:SI 4 "=r"))]
+  "TARGET_ARM || (TARGET_THUMB2 && CONST_INT_P (operands[2]))"
+  "bic%.%?\\t%4, %3, %1%S0"
+  [(set_attr "predicable" "yes")
+   (set_attr "predicable_short_it" "no")
+   (set_attr "conds" "set")
+   (set_attr "shift" "1")
+   (set (attr "type") (if_then_else (match_operand 2 "const_int_operand" "")
+		      (const_string "logic_shift_imm")
+		      (const_string "logic_shift_reg")))]
+)
+
+;; Same as andsi_not_shiftsi_si_scc_no_reuse, but the bics result is also
+;; getting reused later.
+(define_insn "andsi_not_shiftsi_si_scc"
+  [(parallel [(set (reg:CC_NOOV CC_REGNUM)
+	(compare:CC_NOOV
+		(and:SI (not:SI (match_operator:SI 0 "shift_operator"
+			[(match_operand:SI 1 "s_register_operand" "r")
+			 (match_operand:SI 2 "arm_rhs_operand" "rM")]))
+			(match_operand:SI 3 "s_register_operand" "r"))
+		(const_int 0)))
+	(set (match_operand:SI 4 "s_register_operand" "=r")
+	     (and:SI (not:SI (match_op_dup 0
+		     [(match_dup 1)
+		      (match_dup 2)]))
+		     (match_dup 3)))])]
+  "TARGET_ARM || (TARGET_THUMB2 && CONST_INT_P (operands[2]))"
+  "bic%.%?\\t%4, %3, %1%S0"
+  [(set_attr "predicable" "yes")
+   (set_attr "predicable_short_it" "no")
+   (set_attr "conds" "set")
+   (set_attr "shift" "1")
+   (set (attr "type") (if_then_else (match_operand 2 "const_int_operand" "")
+		      (const_string "logic_shift_imm")
+		      (const_string "logic_shift_reg")))]
+)
+
 (define_insn "*andsi_notsi_si_compare0"
   [(set (reg:CC_NOOV CC_REGNUM)
 	(compare:CC_NOOV
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index 5206d88..8a29d99 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,10 @@
+2015-05-18  Alex Velenko <Alex.Velenko@arm.com>
+
+	* gcc.target/arm/bics_1.c : New testcase.
+	* gcc.target/arm/bics_2.c : New testcase.
+	* gcc.target/arm/bics_3.c : New testcase.
+	* gcc.target/arm/bics_4.c : New testcase.
+
 2015-05-18  Robert Suchanek  <robert.suchanek@imgtec.com>
 
 	* gcc.target/mips/umips-attr.c: New test.
diff --git a/gcc/testsuite/gcc.target/arm/bics_1.c b/gcc/testsuite/gcc.target/arm/bics_1.c
new file mode 100644
index 0000000..173eb89
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/bics_1.c
@@ -0,0 +1,54 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+/* { dg-require-effective-target arm32 } */
+
+extern void abort (void);
+
+int
+bics_si_test1 (int a, int b, int c)
+{
+  int d = a & ~b;
+
+  /* { dg-final { scan-assembler-times "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+" 2 } } */
+  if (d == 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+bics_si_test2 (int a, int b, int c)
+{
+  int d = a & ~(b << 3);
+
+  /* { dg-final { scan-assembler-times "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+, .sl \#3" 1 } } */
+  if (d == 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+main ()
+{
+  int x;
+
+  x = bics_si_test1 (29, ~4, 5);
+  if (x != ((29 & 4) + ~4 + 5))
+    abort ();
+
+  x = bics_si_test1 (5, ~2, 20);
+  if (x != 25)
+    abort ();
+
+    x = bics_si_test2 (35, ~4, 5);
+  if (x != ((35 & ~(~4 << 3)) + ~4 + 5))
+    abort ();
+
+  x = bics_si_test2 (96, ~2, 20);
+  if (x != 116)
+  abort ();
+
+  return 0;
+}
+/* { dg-final { cleanup-saved-temps } } */
diff --git a/gcc/testsuite/gcc.target/arm/bics_2.c b/gcc/testsuite/gcc.target/arm/bics_2.c
new file mode 100644
index 0000000..740d7c9
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/bics_2.c
@@ -0,0 +1,57 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+/* { dg-require-effective-target arm32 } */
+
+extern void abort (void);
+
+int
+bics_si_test1 (int a, int b, int c)
+{
+  int d = a & ~b;
+
+  /* { dg-final { scan-assembler-not "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+" } } */
+  /* { dg-final { scan-assembler-times "bic\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+" 2 } } */
+  if (d <= 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+bics_si_test2 (int a, int b, int c)
+{
+  int d = a & ~(b << 3);
+
+  /* { dg-final { scan-assembler-not "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+, .sl \#3" } } */
+  /* { dg-final { scan-assembler "bic\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+, .sl \#3" } } */
+  if (d <= 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+main ()
+{
+  int x;
+
+  x = bics_si_test1 (29, ~4, 5);
+  if (x != ((29 & 4) + ~4 + 5))
+    abort ();
+
+  x = bics_si_test1 (5, ~2, 20);
+  if (x != 25)
+    abort ();
+
+  x = bics_si_test2 (35, ~4, 5);
+  if (x != ((35 & ~(~4 << 3)) + ~4 + 5))
+    abort ();
+
+  x = bics_si_test2 (96, ~2, 20);
+  if (x != 116)
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { cleanup-saved-temps } } */
diff --git a/gcc/testsuite/gcc.target/arm/bics_3.c b/gcc/testsuite/gcc.target/arm/bics_3.c
new file mode 100644
index 0000000..e2b1c72
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/bics_3.c
@@ -0,0 +1,41 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+/* { dg-require-effective-target arm32 } */
+
+extern void abort (void);
+
+int
+bics_si_test (int a, int b)
+{
+  if (a & ~b)
+    return 1;
+  else
+    return 0;
+}
+
+int
+bics_si_test2 (int a, int b)
+{
+  if (a & ~ (b << 2))
+    return 1;
+  else
+    return 0;
+}
+
+int
+main (void)
+{
+  int a = 5;
+  int b = 5;
+  int c = 20;
+  if (bics_si_test (a, b))
+    abort ();
+  if (bics_si_test2 (c, b))
+    abort ();
+  return 0;
+}
+
+/* { dg-final { scan-assembler-times "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+" 2 } } */
+/* { dg-final { scan-assembler-times "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+, .sl #2" 1 } } */
+
+/* { dg-final { cleanup-saved-temps } } */
diff --git a/gcc/testsuite/gcc.target/arm/bics_4.c b/gcc/testsuite/gcc.target/arm/bics_4.c
new file mode 100644
index 0000000..8f2faf0
--- /dev/null
+++ b/gcc/testsuite/gcc.target/arm/bics_4.c
@@ -0,0 +1,49 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+/* { dg-require-effective-target arm32 } */
+
+extern void abort (void);
+
+int
+bics_si_test1 (int a, int b, int c)
+{
+  if ((a & b) == a)
+    return a;
+  else
+    return c;
+}
+
+int
+bics_si_test2 (int a, int b, int c)
+{
+  if ((a & b) == b)
+    return b;
+  else
+    return c;
+}
+
+int
+main ()
+{
+  int x;
+  x = bics_si_test1 (0xf00d, 0xf11f, 0);
+  if (x != 0xf00d)
+    abort ();
+
+  x = bics_si_test1 (0xf11f, 0xf00d, 0);
+  if (x != 0)
+    abort ();
+
+  x = bics_si_test2 (0xf00d, 0xf11f, 0);
+  if (x != 0)
+    abort ();
+
+  x = bics_si_test2 (0xf11f, 0xf00d, 0);
+  if (x != 0xf00d)
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { scan-assembler-times "bics\tr\[0-9\]+, r\[0-9\]+, r\[0-9\]+" 2 } } */
+/* { dg-final { cleanup-saved-temps } } */