[ARM] Implement support for ACLE Coprocessor MCRR and MRRC intrinsics

gcc/ChangeLog:
2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* config/arm/arm.md (<mcrr>): New.
	(<mrrc>): New.
	* config/arm/arm.c (arm_arch5te): New.
	(arm_option_override): Set arm_arch5te.
	(arm_coproc_builtin_available): Add support for mcrr, mcrr2, mrrc
	and mrrc2.
	* config/arm/arm-builtins.c (MCRR_QUALIFIERS): Define to...
	(arm_mcrr_qualifiers): ... this. New.
	(MRRC_QUALIFIERS): Define to...
	(arm_mrrc_qualifiers): ... this. New.
	* config/arm/arm_acle.h (__arm_mcrr, __arm_mcrr2, __arm_mrrc,
	__arm_mrrc2): New.
	* config/arm/arm_acle_builtins.def (mcrr, mcrr2, mrrc, mrrc2): New.
	* config/arm/iterators.md (MCRRI, mcrr, MCRR): New.
	(MRRCI, mrrc, MRRC): New.
	* config/arm/unspecs.md (VUNSPEC_MCRR, VUNSPEC_MCRR2, VUNSPEC_MRRC,
	VUNSPEC_MRRC2): New.

gcc/testsuite/ChangeLog:
2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>

	* gcc.target/arm/acle/mcrr: New.
	* gcc.target/arm/acle/mcrr2: New.
	* gcc.target/arm/acle/mrrc: New.
	* gcc.target/arm/acle/mrrc2: New.

From-SVN: r244175

gcc/ChangeLog

 2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>
 
+	* config/arm/arm.md (<mcrr>): New.
+	(<mrrc>): New.
+	* config/arm/arm.c (arm_arch5te): New.
+	(arm_option_override): Set arm_arch5te.
+	(arm_coproc_builtin_available): Add support for mcrr, mcrr2, mrrc
+	and mrrc2.
+	* config/arm/arm-builtins.c (MCRR_QUALIFIERS): Define to...
+	(arm_mcrr_qualifiers): ... this. New.
+	(MRRC_QUALIFIERS): Define to...
+	(arm_mrrc_qualifiers): ... this. New.
+	* config/arm/arm_acle.h (__arm_mcrr, __arm_mcrr2, __arm_mrrc,
+	__arm_mrrc2): New.
+	* config/arm/arm_acle_builtins.def (mcrr, mcrr2, mrrc, mrrc2): New.
+	* config/arm/iterators.md (MCRRI, mcrr, MCRR): New.
+	(MRRCI, mrrc, MRRC): New.
+	* config/arm/unspecs.md (VUNSPEC_MCRR, VUNSPEC_MCRR2, VUNSPEC_MRRC,
+	VUNSPEC_MRRC2): New.
+
+2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>
+
 	* config/arm/arm.md (<mcr>): New.
 	(<mrc>): New.
 	* config/arm/arm.c (arm_coproc_builtin_available): Add

gcc/config/arm/arm-builtins.c

@@ -217,6 +217,24 @@ arm_mrc_qualifiers[SIMD_MAX_BUILTIN_ARGS]
       qualifier_unsigned_immediate, qualifier_unsigned_immediate };
 #define MRC_QUALIFIERS \
   (arm_mrc_qualifiers)
+
+/* void (unsigned immediate, unsigned immediate,  T, unsigned immediate).  */
+static enum arm_type_qualifiers
+arm_mcrr_qualifiers[SIMD_MAX_BUILTIN_ARGS]
+  = { qualifier_void, qualifier_unsigned_immediate,
+      qualifier_unsigned_immediate, qualifier_none,
+      qualifier_unsigned_immediate };
+#define MCRR_QUALIFIERS \
+  (arm_mcrr_qualifiers)
+
+/* T (unsigned immediate, unsigned immediate, unsigned immediate).  */
+static enum arm_type_qualifiers
+arm_mrrc_qualifiers[SIMD_MAX_BUILTIN_ARGS]
+  = { qualifier_none, qualifier_unsigned_immediate,
+      qualifier_unsigned_immediate, qualifier_unsigned_immediate };
+#define MRRC_QUALIFIERS \
+  (arm_mrrc_qualifiers)
+
 /* The first argument (return type) of a store should be void type,
    which we represent with qualifier_void.  Their first operand will be
    a DImode pointer to the location to store to, so we must use

gcc/config/arm/arm.c

@@ -814,6 +814,9 @@ int arm_arch5 = 0;
 /* Nonzero if this chip supports the ARM Architecture 5E extensions.  */
 int arm_arch5e = 0;
 
+/* Nonzero if this chip supports the ARM Architecture 5TE extensions.  */
+int arm_arch5te = 0;
+
 /* Nonzero if this chip supports the ARM Architecture 6 extensions.  */
 int arm_arch6 = 0;
 
@@ -3372,6 +3375,8 @@ arm_option_override (void)
   arm_arch4t = arm_arch4 && bitmap_bit_p (arm_active_target.isa, isa_bit_thumb);
   arm_arch5 = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv5);
   arm_arch5e = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv5e);
+  arm_arch5te = arm_arch5e
+    && bitmap_bit_p (arm_active_target.isa, isa_bit_thumb);
   arm_arch6 = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv6);
   arm_arch6k = bitmap_bit_p (arm_active_target.isa, isa_bit_ARMv6k);
   arm_arch_notm = bitmap_bit_p (arm_active_target.isa, isa_bit_notm);
@@ -30925,6 +30930,18 @@ arm_coproc_builtin_available (enum unspecv builtin)
 	if (arm_arch5)
 	  return true;
 	break;
+      case VUNSPEC_MCRR:
+      case VUNSPEC_MRRC:
+	/* Only present in ARMv5TE, ARMv6 (but not ARMv6-M), ARMv7* and
+	   ARMv8-{A,M}.  */
+	if (arm_arch6 || arm_arch5te)
+	  return true;
+	break;
+      case VUNSPEC_MCRR2:
+      case VUNSPEC_MRRC2:
+	if (arm_arch6)
+	  return true;
+	break;
       default:
 	gcc_unreachable ();
     }

gcc/config/arm/arm.md

@@ -12016,6 +12016,37 @@
   [(set_attr "length" "4")
    (set_attr "type" "coproc")])
 
+(define_insn "<mcrr>"
+  [(unspec_volatile [(match_operand:SI 0 "immediate_operand" "n")
+		     (match_operand:SI 1 "immediate_operand" "n")
+		     (match_operand:DI 2 "s_register_operand" "r")
+		     (match_operand:SI 3 "immediate_operand" "n")] MCRRI)
+   (use (match_dup 2))]
+  "arm_coproc_builtin_available (VUNSPEC_<MCRR>)"
+{
+  arm_const_bounds (operands[0], 0, 16);
+  arm_const_bounds (operands[1], 0, 8);
+  arm_const_bounds (operands[3], 0, (1 << 5));
+  return "<mcrr>\\tp%c0, %1, %Q2, %R2, CR%c3";
+}
+  [(set_attr "length" "4")
+   (set_attr "type" "coproc")])
+
+(define_insn "<mrrc>"
+  [(set (match_operand:DI 0 "s_register_operand" "=r")
+	(unspec_volatile [(match_operand:SI 1 "immediate_operand" "n")
+			  (match_operand:SI 2 "immediate_operand" "n")
+			  (match_operand:SI 3 "immediate_operand" "n")] MRRCI))]
+  "arm_coproc_builtin_available (VUNSPEC_<MRRC>)"
+{
+  arm_const_bounds (operands[1], 0, 16);
+  arm_const_bounds (operands[2], 0, 8);
+  arm_const_bounds (operands[3], 0, (1 << 5));
+  return "<mrrc>\\tp%c1, %2, %Q0, %R0, CR%c3";
+}
+  [(set_attr "length" "4")
+   (set_attr "type" "coproc")])
+
 ;; Vector bits common to IWMMXT and Neon
 (include "vec-common.md")
 ;; Load the Intel Wireless Multimedia Extension patterns

gcc/config/arm/arm_acle.h

@@ -136,6 +136,40 @@ __arm_mrc2 (const unsigned int __coproc, const unsigned int __opc1,
 {
   return __builtin_arm_mrc2 (__coproc, __opc1, __CRn, __CRm, __opc2);
 }
+
+#if __ARM_ARCH >= 6 ||  defined (__ARM_ARCH_5TE__)
+
+__extension__ static __inline void __attribute__ ((__always_inline__))
+__arm_mcrr (const unsigned int __coproc, const unsigned int __opc1,
+	    uint64_t __value, const unsigned int __CRm)
+{
+  return __builtin_arm_mcrr (__coproc, __opc1, __value, __CRm);
+}
+
+__extension__ static __inline uint64_t __attribute__ ((__always_inline__))
+__arm_mrrc (const unsigned int __coproc, const unsigned int __opc1,
+	    const unsigned int __CRm)
+{
+  return __builtin_arm_mrrc (__coproc, __opc1, __CRm);
+}
+
+#if __ARM_ARCH >= 6
+
+__extension__ static __inline void __attribute__ ((__always_inline__))
+__arm_mcrr2 (const unsigned int __coproc, const unsigned int __opc1,
+	    uint64_t __value, const unsigned int __CRm)
+{
+  return __builtin_arm_mcrr2 (__coproc, __opc1, __value, __CRm);
+}
+
+__extension__ static __inline uint64_t __attribute__ ((__always_inline__))
+__arm_mrrc2 (const unsigned int __coproc, const unsigned int __opc1,
+	     const unsigned int __CRm)
+{
+  return __builtin_arm_mrrc2 (__coproc, __opc1,  __CRm);
+}
+#endif /* __ARM_ARCH >= 6.  */
+#endif /* __ARM_ARCH >= 6 ||  defined (__ARM_ARCH_5TE__).  */
 #endif /*  __ARM_ARCH >= 5.  */
 #endif /* (!__thumb__ || __thumb2__) &&  __ARM_ARCH >= 4.  */
 

gcc/config/arm/arm_acle_builtins.def

@@ -38,3 +38,7 @@ VAR1 (MCR, mcr, void)
 VAR1 (MCR, mcr2, void)
 VAR1 (MRC, mrc, si)
 VAR1 (MRC, mrc2, si)
+VAR1 (MCRR, mcrr, void)
+VAR1 (MCRR, mcrr2, void)
+VAR1 (MRRC, mrrc, di)
+VAR1 (MRRC, mrrc2, di)

gcc/config/arm/iterators.md

@@ -976,3 +976,15 @@
 
 (define_int_attr mrc [(VUNSPEC_MRC "mrc") (VUNSPEC_MRC2 "mrc2")])
 (define_int_attr MRC [(VUNSPEC_MRC "MRC") (VUNSPEC_MRC2 "MRC2")])
+
+;; An iterator for the MCRR coprocessor instructions
+(define_int_iterator MCRRI [VUNSPEC_MCRR VUNSPEC_MCRR2])
+
+(define_int_attr mcrr [(VUNSPEC_MCRR "mcrr") (VUNSPEC_MCRR2 "mcrr2")])
+(define_int_attr MCRR [(VUNSPEC_MCRR "MCRR") (VUNSPEC_MCRR2 "MCRR2")])
+
+;; An iterator for the MRRC coprocessor instructions
+(define_int_iterator MRRCI [VUNSPEC_MRRC VUNSPEC_MRRC2])
+
+(define_int_attr mrrc [(VUNSPEC_MRRC "mrrc") (VUNSPEC_MRRC2 "mrrc2")])
+(define_int_attr MRRC [(VUNSPEC_MRRC "MRRC") (VUNSPEC_MRRC2 "MRRC2")])

gcc/config/arm/unspecs.md

@@ -164,6 +164,10 @@
   VUNSPEC_MCR2		; Represent the coprocessor mcr2 instruction.
   VUNSPEC_MRC		; Represent the coprocessor mrc instruction.
   VUNSPEC_MRC2		; Represent the coprocessor mrc2 instruction.
+  VUNSPEC_MCRR		; Represent the coprocessor mcrr instruction.
+  VUNSPEC_MCRR2		; Represent the coprocessor mcrr2 instruction.
+  VUNSPEC_MRRC		; Represent the coprocessor mrrc instruction.
+  VUNSPEC_MRRC2		; Represent the coprocessor mrrc2 instruction.
 ])
 
 ;; Enumerators for NEON unspecs.

gcc/testsuite/ChangeLog

 2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>
 
+	* gcc.target/arm/acle/mcrr: New.
+	* gcc.target/arm/acle/mcrr2: New.
+	* gcc.target/arm/acle/mrrc: New.
+	* gcc.target/arm/acle/mrrc2: New.
+
+2017-01-06  Andre Vieira  <andre.simoesdiasvieira@arm.com>
+
 	* gcc.target/arm/acle/mcr.c: New.
 	* gcc.target/arm/acle/mrc.c: New.
 	* gcc.target/arm/acle/mcr2.c: New.

gcc/testsuite/gcc.target/arm/acle/mcrr.c

+/* Test the mcrr ACLE intrinsic.  */
+
+/* { dg-do assemble } */
+/* { dg-options "-save-temps" } */
+/* { dg-require-effective-target arm_coproc3_ok } */
+
+#include "arm_acle.h"
+
+void test_mcrr (uint64_t a)
+{
+  a += 77;
+  __arm_mcrr (10, 5, a, 3);
+}
+
+/* { dg-final { scan-assembler "add\[^\n\]*#77\n" } } */
+/* { dg-final { scan-assembler "mcrr\tp10, #5, r\[r0-9\]*, r\[r0-9\]*, CR3\n" } } */

gcc/testsuite/gcc.target/arm/acle/mcrr2.c

+/* Test the mcrr2 ACLE intrinsic.  */
+
+/* { dg-do assemble } */
+/* { dg-options "-save-temps" } */
+/* { dg-require-effective-target arm_coproc4_ok } */
+
+#include "arm_acle.h"
+
+void test_mcrr2 (uint64_t a)
+{
+  a += 77;
+  __arm_mcrr2 (10, 5, a, 3);
+}
+
+/* { dg-final { scan-assembler "add\[^\n\]*#77\n" } } */
+/* { dg-final { scan-assembler "mcrr2\tp10, #5, r\[r0-9\]*, r\[r0-9\]*, CR3\n" } } */

gcc/testsuite/gcc.target/arm/acle/mrrc.c

+/* Test the mrrc ACLE intrinsic.  */
+
+/* { dg-do assemble } */
+/* { dg-options "-save-temps" } */
+/* { dg-require-effective-target arm_coproc3_ok } */
+
+#include "arm_acle.h"
+
+uint64_t test_mrrc (void)
+{
+  return __arm_mrrc (10, 5, 3);
+}
+
+/* { dg-final { scan-assembler "mrrc\tp10, #5, r\[r0-9\]*, r\[r0-9\]*, CR3\n" } } */

gcc/testsuite/gcc.target/arm/acle/mrrc2.c

+/* Test the mrrc2 ACLE intrinsic.  */
+
+/* { dg-do assemble } */
+/* { dg-options "-save-temps" } */
+/* { dg-require-effective-target arm_coproc4_ok } */
+
+#include "arm_acle.h"
+
+uint64_t test_mrrc2 (void)
+{
+  return __arm_mrrc2 (10, 5, 3);
+}
+
+/* { dg-final { scan-assembler "mrrc2\tp10, #5, r\[r0-9\]*, r\[r0-9\]*, CR3\n" } } */

gcc/testsuite/lib/target-supports.exp

@@ -8279,7 +8279,7 @@ proc check_effective_target_arm_coproc2_ok { } {
 
 # Return 1 if the target supports all coprocessor instructions checked by
 # check_effective_target_arm_coproc2_ok in addition the following: mcrr and
-mrrc.
+# mrrc.
 proc check_effective_target_arm_coproc3_ok_nocache { } {
     if { ![check_effective_target_arm_coproc2_ok] } {
 	return 0