[PATCH 04/13] arm: Add GENERAL_AND_VPR_REGS regclass

[Christophe Lyon via Gcc-patches]

At some point during the development of this patch series, it appeared
that in some cases the register allocator wants “VPR or general”
rather than “VPR or general or FP” (which is the same thing as
ALL_REGS).  The series does not seem to require this anymore, but it
seems to be a good thing to do anyway, to give the register allocator
more freedom.

2021-09-01  Christophe Lyon  <christophe.l...@foss.st.com>

        gcc/
        * config/arm/arm.h (reg_class): Add GENERAL_AND_VPR_REGS.
        (REG_CLASS_NAMES): Likewise.
        (REG_CLASS_CONTENTS): Likewise. Add VPR_REG to ALL_REGS.

diff --git a/gcc/config/arm/arm.h b/gcc/config/arm/arm.h
index 015299c1534..fab39d05916 100644
--- a/gcc/config/arm/arm.h
+++ b/gcc/config/arm/arm.h
@@ -1286,6 +1286,7 @@ enum reg_class
   SFP_REG,
   AFP_REG,
   VPR_REG,
+  GENERAL_AND_VPR_REGS,
   ALL_REGS,
   LIM_REG_CLASSES
 };
@@ -1315,6 +1316,7 @@ enum reg_class
   "SFP_REG",           \
   "AFP_REG",           \
   "VPR_REG",           \
+  "GENERAL_AND_VPR_REGS", \
   "ALL_REGS"           \
 }
 
@@ -1343,7 +1345,8 @@ enum reg_class
   { 0x00000000, 0x00000000, 0x00000000, 0x00000040 }, /* SFP_REG */    \
   { 0x00000000, 0x00000000, 0x00000000, 0x00000080 }, /* AFP_REG */    \
   { 0x00000000, 0x00000000, 0x00000000, 0x00000400 }, /* VPR_REG.  */  \
-  { 0xFFFF7FFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0000000F }  /* ALL_REGS.  */ \
+  { 0x00005FFF, 0x00000000, 0x00000000, 0x00000400 }, /* GENERAL_AND_VPR_REGS. 
 */ \
+  { 0xFFFF7FFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x0000040F }  /* ALL_REGS.  */ \
 }
 
 #define FP_SYSREGS \
-- 
2.25.1