From c0097dc7d0965b394a6eaa877f67086d401941a4 Mon Sep 17 00:00:00 2001
From: Craig Topper <craig.topper@gmail.com>
Date: Sun, 31 Jul 2016 20:20:08 +0000
Subject: [PATCH] [X86] Simplify code for determing GR or FR reg classes by
 querying for super classes instead of manually listing individual classes.

llvm-svn: 277306
---
 llvm/lib/Target/X86/X86ISelLowering.cpp | 59 ++++++---------------------------
 1 file changed, 10 insertions(+), 49 deletions(-)

diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp
index 311455a..23f2ee9 100644
--- a/llvm/lib/Target/X86/X86ISelLowering.cpp
+++ b/llvm/lib/Target/X86/X86ISelLowering.cpp
@@ -31727,60 +31727,21 @@ void X86TargetLowering::LowerAsmOperandForConstraint(SDValue Op,
 /// Check if \p RC is a general purpose register class.
 /// I.e., GR* or one of their variant.
 static bool isGRClass(const TargetRegisterClass &RC) {
-  switch (RC.getID()) {
-  case X86::GR8RegClassID:
-  case X86::GR8_ABCD_LRegClassID:
-  case X86::GR8_ABCD_HRegClassID:
-  case X86::GR8_NOREXRegClassID:
-  case X86::GR16RegClassID:
-  case X86::GR16_ABCDRegClassID:
-  case X86::GR16_NOREXRegClassID:
-  case X86::GR32RegClassID:
-  case X86::GR32_ABCDRegClassID:
-  case X86::GR32_TCRegClassID:
-  case X86::GR32_NOREXRegClassID:
-  case X86::GR32_NOAXRegClassID:
-  case X86::GR32_NOSPRegClassID:
-  case X86::GR32_NOREX_NOSPRegClassID:
-  case X86::GR32_ADRegClassID:
-  case X86::GR64RegClassID:
-  case X86::GR64_ABCDRegClassID:
-  case X86::GR64_TCRegClassID:
-  case X86::GR64_TCW64RegClassID:
-  case X86::GR64_NOREXRegClassID:
-  case X86::GR64_NOSPRegClassID:
-  case X86::GR64_NOREX_NOSPRegClassID:
-  case X86::LOW32_ADDR_ACCESSRegClassID:
-  case X86::LOW32_ADDR_ACCESS_RBPRegClassID:
-    return true;
-  default:
-    return false;
-  }
+  return RC.hasSuperClassEq(&X86::GR8RegClass) ||
+         RC.hasSuperClassEq(&X86::GR16RegClass) ||
+         RC.hasSuperClassEq(&X86::GR32RegClass) ||
+         RC.hasSuperClassEq(&X86::GR64RegClass) ||
+         RC.hasSuperClassEq(&X86::LOW32_ADDR_ACCESS_RBPRegClass);
 }
 
 /// Check if \p RC is a vector register class.
 /// I.e., FR* / VR* or one of their variant.
 static bool isFRClass(const TargetRegisterClass &RC) {
-  switch (RC.getID()) {
-  case X86::FR32RegClassID:
-  case X86::FR32XRegClassID:
-  case X86::FR64RegClassID:
-  case X86::FR64XRegClassID:
-  case X86::FR128RegClassID:
-  case X86::VR64RegClassID:
-  case X86::VR128RegClassID:
-  case X86::VR128LRegClassID:
-  case X86::VR128HRegClassID:
-  case X86::VR128XRegClassID:
-  case X86::VR256RegClassID:
-  case X86::VR256LRegClassID:
-  case X86::VR256HRegClassID:
-  case X86::VR256XRegClassID:
-  case X86::VR512RegClassID:
-    return true;
-  default:
-    return false;
-  }
+  return RC.hasSuperClassEq(&X86::FR32XRegClass) ||
+         RC.hasSuperClassEq(&X86::FR64XRegClass) ||
+         RC.hasSuperClassEq(&X86::VR128XRegClass) ||
+         RC.hasSuperClassEq(&X86::VR256XRegClass) ||
+         RC.hasSuperClassEq(&X86::VR512RegClass);
 }
 
 std::pair<unsigned, const TargetRegisterClass *>
-- 
2.7.4