[ARM] Fix small multiply feature

2017-04-03  Thomas Preud'homme  <thomas.preudhomme@arm.com>

    gcc/
    PR target/80307
    * config/arm/arm.c (thumb1_rtx_costs): Give a cost of 32
    instructions for small multiply cores.

    gcc/testsuite/
    PR target/80307
    * gcc.target/arm/small-multiply-m0-1.c: Do not skip test if not
    targeting any CPU or architecture.
    * gcc.target/arm/small-multiply-m0-2.c: Likewise.
    * gcc.target/arm/small-multiply-m0-3.c: Likewise.
    * gcc.target/arm/small-multiply-m0plus-1.c: Likewise.
    * gcc.target/arm/small-multiply-m0plus-2.c: Likewise.
    * gcc.target/arm/small-multiply-m0plus-3.c: Likewise.
    * gcc.target/arm/small-multiply-m1-1.c: Likewise.
    * gcc.target/arm/small-multiply-m1-2.c: Likewise.
    * gcc.target/arm/small-multiply-m1-3.c: Likewise.

From-SVN: r246682

gcc/ChangeLog

+2017-04-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	PR target/80307
+	* config/arm/arm.c (thumb1_rtx_costs): Give a cost of 32
+	instructions for small multiply cores.
+
 2017-04-04  Jeff Law  <law@redhat.com>
 
 	* config/mips/mips.c (mips_multi_add): Zero initialize the newly
 	added member.
 	(mips_expand_vec_perm_const): Initialize elements in orig_perm
 	that are not set by the loop over the elements.
-	
+
 2017-04-04  Jakub Jelinek  <jakub@redhat.com>
 
 	PR target/80286

gcc/config/arm/arm.c

@@ -8727,6 +8727,9 @@ thumb1_rtx_costs (rtx x, enum rtx_code code, enum rtx_code outer)
       return COSTS_N_INSNS (1);
 
     case MULT:
+      if (arm_arch6m && arm_m_profile_small_mul)
+	return COSTS_N_INSNS (32);
+
       if (CONST_INT_P (XEXP (x, 1)))
 	{
 	  int cycles = 0;

gcc/testsuite/ChangeLog

+2017-04-04  Thomas Preud'homme  <thomas.preudhomme@arm.com>
+
+	PR target/80307
+	* gcc.target/arm/small-multiply-m0-1.c: Do not skip test if not
+	targeting any CPU or architecture.
+	* gcc.target/arm/small-multiply-m0-2.c: Likewise.
+	* gcc.target/arm/small-multiply-m0-3.c: Likewise.
+	* gcc.target/arm/small-multiply-m0plus-1.c: Likewise.
+	* gcc.target/arm/small-multiply-m0plus-2.c: Likewise.
+	* gcc.target/arm/small-multiply-m0plus-3.c: Likewise.
+	* gcc.target/arm/small-multiply-m1-1.c: Likewise.
+	* gcc.target/arm/small-multiply-m1-2.c: Likewise.
+	* gcc.target/arm/small-multiply-m1-3.c: Likewise.
+
 2017-04-04  Nicolas Koenig  <koenigni@student.ethz.ch> 
 
 	PR fortran/69498

gcc/testsuite/gcc.target/arm/small-multiply-m0-1.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0.small-multiply -mthumb -O2" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m0-2.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0.small-multiply -mthumb -Os" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m0-3.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0.small-multiply -mthumb -Os" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m0plus-1.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0plus.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0plus.small-multiply -mthumb -O2" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m0plus-2.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0plus.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0plus.small-multiply -mthumb -Os" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m0plus-3.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m0plus.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m0plus.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m0plus.small-multiply -mthumb -Os" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m1-1.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m1.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m1.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m1.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m1.small-multiply -mthumb -O2" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m1-2.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m1.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m1.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m1.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m1.small-multiply -mthumb -Os" } */
 
 int

gcc/testsuite/gcc.target/arm/small-multiply-m1-3.c

 /* { dg-do compile } */
 /* { dg-require-effective-target arm_thumb1_ok } */
-/* { dg-skip-if "Test is specific to cortex-m1.small-multiply" { arm*-*-* } { "*" } { "-mcpu=cortex-m1.small-multiply" } } */
+/* { dg-skip-if "do not override -mcpu" { *-*-* } { "-mcpu=*" "-march=*" } { "-mcpu=cortex-m1.small-multiply" } } */
 /* { dg-options "-mcpu=cortex-m1.small-multiply -mthumb -Os" } */
 
 int