[llvm] Store sysreg names in-line with their descriptors. (PR #119157)

[Owen Anderson via llvm-commits]

https://github.com/resistor created https://github.com/llvm/llvm-project/pull/119157

This wastes some disk space, because we have to size the arrays for
the maximum possible length. However, it eliminates dynamic relocations
from the SysRegsList arrays.


>From 0f5b5f4c5ec9b051357768021a01f2246004f652 Mon Sep 17 00:00:00 2001
From: Owen Anderson <resistor at mac.com>
Date: Mon, 9 Dec 2024 14:18:32 +1300
Subject: [PATCH] Store sysreg names in-line with their descriptors.

This wastes some disk space, because we have to size the arrays for
the maximum possible length. However, it eliminates dynamic relocations
from the SysRegsList arrays.
---
 llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h    | 4 ++--
 llvm/lib/Target/ARM/Utils/ARMBaseInfo.h            | 2 +-
 llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h | 6 +++---
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h b/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
index 8f34cf054fe286..e0ccba4d6a59e8 100644
--- a/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
+++ b/llvm/lib/Target/AArch64/Utils/AArch64BaseInfo.h
@@ -700,8 +700,8 @@ AArch64StringToVectorLayout(StringRef LayoutStr) {
 
 namespace AArch64SysReg {
   struct SysReg {
-    const char *Name;
-    const char *AltName;
+    const char Name[32];
+    const char AltName[32];
     unsigned Encoding;
     bool Readable;
     bool Writeable;
diff --git a/llvm/lib/Target/ARM/Utils/ARMBaseInfo.h b/llvm/lib/Target/ARM/Utils/ARMBaseInfo.h
index 56a925f09ea7ae..5562572c5abf48 100644
--- a/llvm/lib/Target/ARM/Utils/ARMBaseInfo.h
+++ b/llvm/lib/Target/ARM/Utils/ARMBaseInfo.h
@@ -189,7 +189,7 @@ inline static unsigned ARMCondCodeFromString(StringRef CC) {
 // System Registers
 namespace ARMSysReg {
   struct MClassSysReg {
-    const char *Name;
+    const char Name[32];
     uint16_t M1Encoding12;
     uint16_t M2M3Encoding8;
     uint16_t Encoding;
diff --git a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
index 9e36d62352ae51..fe28195654fdea 100644
--- a/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
+++ b/llvm/lib/Target/RISCV/MCTargetDesc/RISCVBaseInfo.h
@@ -449,9 +449,9 @@ int getLoadFPImm(APFloat FPImm);
 
 namespace RISCVSysReg {
 struct SysReg {
-  const char *Name;
-  const char *AltName;
-  const char *DeprecatedName;
+  const char Name[32];
+  const char AltName[32];
+  const char DeprecatedName[32];
   unsigned Encoding;
   // FIXME: add these additional fields when needed.
   // Privilege Access: Read, Write, Read-Only.