AArch64 Support for BICS in the backend

From-SVN: r198526

5 files changed, 297 insertions, 0 deletions

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 2acb274..f1692c6 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,11 @@
+2013-05-02  Ian Bolton  <ian.bolton@arm.com>
+
+	* config/aarch64/aarch64.md (*and_one_cmpl<mode>3_compare0):
+	New pattern.
+	(*and_one_cmplsi3_compare0_uxtw): Likewise.
+	(*and_one_cmpl_<SHIFT:optab><mode>3_compare0): Likewise.
+	(*and_one_cmpl_<SHIFT:optab>si3_compare0_uxtw): Likewise.
+
 2013-05-02  Richard Biener  <rguenther@suse.de>
 
 	* tree-scalar-evolution.c (scev_info_hasher): Remove.
diff --git a/gcc/config/aarch64/aarch64.md b/gcc/config/aarch64/aarch64.md
index 96be7a10..50acdaaf 100644
--- a/gcc/config/aarch64/aarch64.md
+++ b/gcc/config/aarch64/aarch64.md
@@ -2746,6 +2746,35 @@
   [(set_attr "v8type" "logic")
    (set_attr "mode" "<MODE>")])
 
+(define_insn "*and_one_cmpl<mode>3_compare0"
+  [(set (reg:CC_NZ CC_REGNUM)
+	(compare:CC_NZ
+	 (and:GPI (not:GPI
+		   (match_operand:GPI 1 "register_operand" "r"))
+		  (match_operand:GPI 2 "register_operand" "r"))
+	 (const_int 0)))
+   (set (match_operand:GPI 0 "register_operand" "=r")
+	(and:GPI (not:GPI (match_dup 1)) (match_dup 2)))]
+  ""
+  "bics\\t%<w>0, %<w>2, %<w>1"
+  [(set_attr "v8type" "logics")
+   (set_attr "mode" "<MODE>")])
+
+;; zero_extend version of above
+(define_insn "*and_one_cmplsi3_compare0_uxtw"
+  [(set (reg:CC_NZ CC_REGNUM)
+	(compare:CC_NZ
+	 (and:SI (not:SI
+		  (match_operand:SI 1 "register_operand" "r"))
+		 (match_operand:SI 2 "register_operand" "r"))
+	 (const_int 0)))
+   (set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI (and:SI (not:SI (match_dup 1)) (match_dup 2))))]
+  ""
+  "bics\\t%w0, %w2, %w1"
+  [(set_attr "v8type" "logics")
+   (set_attr "mode" "SI")])
+
 (define_insn "*<LOGICAL:optab>_one_cmpl_<SHIFT:optab><mode>3"
   [(set (match_operand:GPI 0 "register_operand" "=r")
 	(LOGICAL:GPI (not:GPI
@@ -2758,6 +2787,43 @@
   [(set_attr "v8type" "logic_shift")
    (set_attr "mode" "<MODE>")])
 
+(define_insn "*and_one_cmpl_<SHIFT:optab><mode>3_compare0"
+  [(set (reg:CC_NZ CC_REGNUM)
+	(compare:CC_NZ
+	 (and:GPI (not:GPI
+		   (SHIFT:GPI
+		    (match_operand:GPI 1 "register_operand" "r")
+		    (match_operand:QI 2 "aarch64_shift_imm_<mode>" "n")))
+		  (match_operand:GPI 3 "register_operand" "r"))
+	 (const_int 0)))
+   (set (match_operand:GPI 0 "register_operand" "=r")
+	(and:GPI (not:GPI
+		  (SHIFT:GPI
+		   (match_dup 1) (match_dup 2))) (match_dup 3)))]
+  ""
+  "bics\\t%<w>0, %<w>3, %<w>1, <SHIFT:shift> %2"
+  [(set_attr "v8type" "logics_shift")
+   (set_attr "mode" "<MODE>")])
+
+;; zero_extend version of above
+(define_insn "*and_one_cmpl_<SHIFT:optab>si3_compare0_uxtw"
+  [(set (reg:CC_NZ CC_REGNUM)
+	(compare:CC_NZ
+	 (and:SI (not:SI
+		  (SHIFT:SI
+		   (match_operand:SI 1 "register_operand" "r")
+		   (match_operand:QI 2 "aarch64_shift_imm_si" "n")))
+		 (match_operand:SI 3 "register_operand" "r"))
+	 (const_int 0)))
+   (set (match_operand:DI 0 "register_operand" "=r")
+	(zero_extend:DI (and:SI
+			 (not:SI
+			  (SHIFT:SI (match_dup 1) (match_dup 2))) (match_dup 3))))]
+  ""
+  "bics\\t%w0, %w3, %w1, <SHIFT:shift> %2"
+  [(set_attr "v8type" "logics_shift")
+   (set_attr "mode" "SI")])
+
 (define_insn "clz<mode>2"
   [(set (match_operand:GPI 0 "register_operand" "=r")
 	(clz:GPI (match_operand:GPI 1 "register_operand" "r")))]
diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog
index a083699..4c7a5b3 100644
--- a/gcc/testsuite/ChangeLog
+++ b/gcc/testsuite/ChangeLog
@@ -1,3 +1,8 @@
+2013-05-02  Ian Bolton  <ian.bolton@arm.com>
+
+	* gcc.target/aarch64/bics_1.c: New test.
+	* gcc.target/aarch64/bics_2.c: Likewise.
+
 2013-05-02  Jakub Jelinek  <jakub@redhat.com>
 
 	PR rtl-optimization/57131
diff --git a/gcc/testsuite/gcc.target/aarch64/bics_1.c b/gcc/testsuite/gcc.target/aarch64/bics_1.c
new file mode 100644
index 0000000..d62ea9a
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/bics_1.c
@@ -0,0 +1,107 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+
+extern void abort (void);
+
+int
+bics_si_test1 (int a, int b, int c)
+{
+  int d = a & ~b;
+
+  /* { dg-final { scan-assembler-times "bics\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+" 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 "bics\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+, lsl 3" } } */
+  if (d == 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+typedef long long s64;
+
+s64
+bics_di_test1 (s64 a, s64 b, s64 c)
+{
+  s64 d = a & ~b;
+
+  /* { dg-final { scan-assembler-times "bics\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+" 2 } } */
+  if (d == 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+s64
+bics_di_test2 (s64 a, s64 b, s64 c)
+{
+  s64 d = a & ~(b << 3);
+
+  /* { dg-final { scan-assembler "bics\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, lsl 3" } } */
+  if (d == 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+main ()
+{
+  int x;
+  s64 y;
+
+  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 ();
+
+  y = bics_di_test1 (0x130000029ll,
+                     ~0x320000004ll,
+                     0x505050505ll);
+
+  if (y != ((0x130000029ll & 0x320000004ll) + ~0x320000004ll + 0x505050505ll))
+    abort ();
+
+  y = bics_di_test1 (0x5000500050005ll,
+                     ~0x2111211121112ll,
+                     0x0000000002020ll);
+  if (y != 0x5000500052025ll)
+    abort ();
+
+  y = bics_di_test2 (0x130000029ll,
+                     ~0x064000008ll,
+                     0x505050505ll);
+  if (y != ((0x130000029ll & ~(~0x064000008ll << 3))
+	    + ~0x064000008ll + 0x505050505ll))
+    abort ();
+
+  y = bics_di_test2 (0x130002900ll,
+                     ~0x088000008ll,
+                     0x505050505ll);
+  if (y != (0x130002900ll + 0x505050505ll))
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { cleanup-saved-temps } } */
diff --git a/gcc/testsuite/gcc.target/aarch64/bics_2.c b/gcc/testsuite/gcc.target/aarch64/bics_2.c
new file mode 100644
index 0000000..e33c748
--- /dev/null
+++ b/gcc/testsuite/gcc.target/aarch64/bics_2.c
@@ -0,0 +1,111 @@
+/* { dg-do run } */
+/* { dg-options "-O2 --save-temps -fno-inline" } */
+
+extern void abort (void);
+
+int
+bics_si_test1 (int a, int b, int c)
+{
+  int d = a & ~b;
+
+  /* { dg-final { scan-assembler-not "bics\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+" } } */
+  /* { dg-final { scan-assembler-times "bic\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+" 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\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+, lsl 3" } } */
+  /* { dg-final { scan-assembler "bic\tw\[0-9\]+, w\[0-9\]+, w\[0-9\]+, lsl 3" } } */
+  if (d <= 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+typedef long long s64;
+
+s64
+bics_di_test1 (s64 a, s64 b, s64 c)
+{
+  s64 d = a & ~b;
+
+  /* { dg-final { scan-assembler-not "bics\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+" } } */
+  /* { dg-final { scan-assembler-times "bic\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+" 2 } } */
+  if (d <= 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+s64
+bics_di_test2 (s64 a, s64 b, s64 c)
+{
+  s64 d = a & ~(b << 3);
+
+  /* { dg-final { scan-assembler-not "bics\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, lsl 3" } } */
+  /* { dg-final { scan-assembler "bic\tx\[0-9\]+, x\[0-9\]+, x\[0-9\]+, lsl 3" } } */
+  if (d <= 0)
+    return a + c;
+  else
+    return b + d + c;
+}
+
+int
+main ()
+{
+  int x;
+  s64 y;
+
+  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 ();
+
+  y = bics_di_test1 (0x130000029ll,
+                     ~0x320000004ll,
+                     0x505050505ll);
+
+  if (y != ((0x130000029ll & 0x320000004ll) + ~0x320000004ll + 0x505050505ll))
+    abort ();
+
+  y = bics_di_test1 (0x5000500050005ll,
+                     ~0x2111211121112ll,
+                     0x0000000002020ll);
+  if (y != 0x5000500052025ll)
+    abort ();
+
+  y = bics_di_test2 (0x130000029ll,
+                     ~0x064000008ll,
+                     0x505050505ll);
+  if (y != ((0x130000029ll & ~(~0x064000008ll << 3))
+	    + ~0x064000008ll + 0x505050505ll))
+    abort ();
+
+  y = bics_di_test2 (0x130002900ll,
+                     ~0x088000008ll,
+                     0x505050505ll);
+  if (y != (0x130002900ll + 0x505050505ll))
+    abort ();
+
+  return 0;
+}
+
+/* { dg-final { cleanup-saved-temps } } */