[llvm-commits] [llvm] r141025 - in /llvm/trunk: lib/Target/ARM/ARMInstrFormats.td lib/Target/ARM/ARMInstrVFP.td lib/Target/ARM/AsmParser/ARMAsmParser.cpp test/MC/ARM/simple-fp-encoding.s

[Jim Grosbach]

Author: grosbach
Date: Mon Oct  3 16:12:43 2011
New Revision: 141025

URL: http://llvm.org/viewvc/llvm-project?rev=141025&view=rev
Log:
ARM assembly parsing and encoding for VMRS/FMSTAT.

Modified:
    llvm/trunk/lib/Target/ARM/ARMInstrFormats.td
    llvm/trunk/lib/Target/ARM/ARMInstrVFP.td
    llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
    llvm/trunk/test/MC/ARM/simple-fp-encoding.s

Modified: llvm/trunk/lib/Target/ARM/ARMInstrFormats.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrFormats.td?rev=141025&r1=141024&r2=141025&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrFormats.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrFormats.td Mon Oct  3 16:12:43 2011
@@ -227,6 +227,10 @@
       : InstAlias<Asm, Result, Emit>, Requires<[IsThumb]>;
 class t2InstAlias<string Asm, dag Result, bit Emit = 0b1>
       : InstAlias<Asm, Result, Emit>, Requires<[IsThumb2]>;
+class VFP2InstAlias<string Asm, dag Result, bit Emit = 0b1>
+      : InstAlias<Asm, Result, Emit>, Requires<[HasVFP2]>;
+class VFP3InstAlias<string Asm, dag Result, bit Emit = 0b1>
+      : InstAlias<Asm, Result, Emit>, Requires<[HasVFP3]>;
 
 //===----------------------------------------------------------------------===//
 // ARM Instruction templates.

Modified: llvm/trunk/lib/Target/ARM/ARMInstrVFP.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrVFP.td?rev=141025&r1=141024&r2=141025&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrVFP.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrVFP.td Mon Oct  3 16:12:43 2011
@@ -1148,3 +1148,10 @@
   let Inst{3-0}   = imm{3-0};
 }
 }
+
+//===----------------------------------------------------------------------===//
+// Assembler aliases.
+//
+
+def : VFP2InstAlias<"fmstat${p}", (FMSTAT pred:$p)>;
+

Modified: llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp?rev=141025&r1=141024&r2=141025&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp (original)
+++ llvm/trunk/lib/Target/ARM/AsmParser/ARMAsmParser.cpp Mon Oct  3 16:12:43 2011
@@ -3046,6 +3046,7 @@
     Error(Parser.getTok().getLoc(), "unexpected token in operand");
     return true;
   case AsmToken::Identifier: {
+    // If this is VMRS, check for the apsr_nzcv operand.
     if (!tryParseRegisterWithWriteBack(Operands))
       return false;
     int Res = tryParseShiftRegister(Operands);
@@ -3053,6 +3054,12 @@
       return false;
     else if (Res == -1) // irrecoverable error
       return true;
+    if (Mnemonic == "vmrs" && Parser.getTok().getString() == "apsr_nzcv") {
+      S = Parser.getTok().getLoc();
+      Parser.Lex();
+      Operands.push_back(ARMOperand::CreateToken("apsr_nzcv", S));
+      return false;
+    }
 
     // Fall though for the Identifier case that is not a register or a
     // special name.

Modified: llvm/trunk/test/MC/ARM/simple-fp-encoding.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/ARM/simple-fp-encoding.s?rev=141025&r1=141024&r2=141025&view=diff
==============================================================================
--- llvm/trunk/test/MC/ARM/simple-fp-encoding.s (original)
+++ llvm/trunk/test/MC/ARM/simple-fp-encoding.s Mon Oct  3 16:12:43 2011
@@ -114,8 +114,10 @@
 @ CHECK: vnmls.f32 s1, s2, s0        @ encoding: [0x00,0x0a,0x51,0xee]
         vnmls.f32       s1, s2, s0
 
-@ FIXME: vmrs apsr_nzcv, fpscr       @ encoding: [0x10,0xfa,0xf1,0xee]
-@        vmrs    apsr_nzcv, fpscr
+@ CHECK: vmrs apsr_nzcv, fpscr       @ encoding: [0x10,0xfa,0xf1,0xee]
+@ CHECK: vmrs apsr_nzcv, fpscr       @ encoding: [0x10,0xfa,0xf1,0xee]
+        vmrs    apsr_nzcv, fpscr
+        fmstat
 
 @ CHECK: vnegne.f64 d16, d16         @ encoding: [0x60,0x0b,0xf1,0x1e]
         vnegne.f64      d16, d16