[X86] Simplify casing. NFC.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@353417 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp
index 68253abb45f8b3a8d78f0d8a4bef81a9f2fa4635..a0fe40268210786e7823213af276c80a4fa0e6a2 100644 (file)
--- a/lib/Target/X86/X86ISelLowering.cpp
+++ b/lib/Target/X86/X86ISelLowering.cpp
@@ -42985,6 +42985,14 @@ X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
     // GCC Constraint Letters
     switch (Constraint[0]) {
     default: break;
+    // 'A' means [ER]AX + [ER]DX.
+    case 'A':
+      if (Subtarget.is64Bit())
+        return std::make_pair(X86::RAX, &X86::GR64_ADRegClass);
+      assert((Subtarget.is32Bit() || Subtarget.is16Bit()) &&
+             "Expecting 64, 32 or 16 bit subtarget");
+      return std::make_pair(X86::EAX, &X86::GR32_ADRegClass);
+
       // TODO: Slight differences here in allocation order and leaving
       // RIP in the class. Do they matter any more here than they do
       // in the normal allocation?
@@ -43184,14 +43192,6 @@ X86TargetLowering::getRegForInlineAsmConstraint(const TargetRegisterInfo *TRI,
     if (StringRef("{fpsr}").equals_lower(Constraint))
       return std::make_pair(X86::FPSW, &X86::FPCCRRegClass);
 
-    // 'A' means [ER]AX + [ER]DX.
-    if (Constraint == "A") {
-      if (Subtarget.is64Bit())
-        return std::make_pair(X86::RAX, &X86::GR64_ADRegClass);
-      assert((Subtarget.is32Bit() || Subtarget.is16Bit()) &&
-             "Expecting 64, 32 or 16 bit subtarget");
-      return std::make_pair(X86::EAX, &X86::GR32_ADRegClass);
-    }
     return Res;
   }