[llvm-commits] [llvm] r119860 - /llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
Bill Wendling
isanbard at gmail.com
Fri Nov 19 14:37:33 PST 2010
Author: void
Date: Fri Nov 19 16:37:33 2010
New Revision: 119860
URL: http://llvm.org/viewvc/llvm-project?rev=119860&view=rev
Log:
Add encodings for some of the thumb ADD instructions. Tests will come once the
asm parser can handle them.
Modified:
llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
Modified: llvm/trunk/lib/Target/ARM/ARMInstrThumb.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMInstrThumb.td?rev=119860&r1=119859&r2=119860&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMInstrThumb.td (original)
+++ llvm/trunk/lib/Target/ARM/ARMInstrThumb.td Fri Nov 19 16:37:33 2010
@@ -195,7 +195,6 @@
[/* For disassembly only; pattern left blank */]>,
T1Encoding<0b101111> {
bits<8> val;
-
let Inst{9-8} = 0b10;
let Inst{7-0} = val;
}
@@ -216,48 +215,77 @@
// For both thumb1 and thumb2.
let isNotDuplicable = 1, isCodeGenOnly = 1 in
def tPICADD : TIt<(outs GPR:$dst), (ins GPR:$lhs, pclabel:$cp), IIC_iALUr, "",
- [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
+ [(set GPR:$dst, (ARMpic_add GPR:$lhs, imm:$cp))]>,
T1Special<{0,0,?,?}> {
- let Inst{6-3} = 0b1111; // A8.6.6 Rm = pc
+ // A8.6.6 Rm = pc
+ bits<3> dst;
+ let Inst{6-3} = 0b1111;
+ let Inst{2-0} = dst;
}
// PC relative add.
def tADDrPCi : T1I<(outs tGPR:$dst), (ins t_imm_s4:$rhs), IIC_iALUi,
- "add\t$dst, pc, $rhs", []>,
- T1Encoding<{1,0,1,0,0,?}>; // A6.2 & A8.6.10
+ "add\t$dst, pc, $rhs", []>,
+ T1Encoding<{1,0,1,0,0,?}> {
+ // A6.2 & A8.6.10
+ bits<3> dst;
+ bits<8> rhs;
+ let Inst{10-8} = dst;
+ let Inst{7-0} = rhs;
+}
-// ADD rd, sp, #imm8
+// ADD <Rd>, sp, #<imm8>
// This is rematerializable, which is particularly useful for taking the
// address of locals.
-let isReMaterializable = 1 in {
+let isReMaterializable = 1 in
def tADDrSPi : T1I<(outs tGPR:$dst), (ins GPR:$sp, t_imm_s4:$rhs), IIC_iALUi,
- "add\t$dst, $sp, $rhs", []>,
- T1Encoding<{1,0,1,0,1,?}>; // A6.2 & A8.6.8
+ "add\t$dst, $sp, $rhs", []>,
+ T1Encoding<{1,0,1,0,1,?}> {
+ // A6.2 & A8.6.8
+ bits<3> dst;
+ bits<8> rhs;
+ let Inst{10-8} = dst;
+ let Inst{7-0} = rhs;
}
-// ADD sp, sp, #imm7
+// ADD sp, sp, #<imm7>
def tADDspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
"add\t$dst, $rhs", []>,
- T1Misc<{0,0,0,0,0,?,?}>; // A6.2.5 & A8.6.8
+ T1Misc<{0,0,0,0,0,?,?}> {
+ // A6.2.5 & A8.6.8
+ bits<7> rhs;
+ let Inst{6-0} = rhs;
+}
-// SUB sp, sp, #imm7
+// SUB sp, sp, #<imm7>
+// FIXME: The encoding and the ASM string don't match up.
def tSUBspi : TIt<(outs GPR:$dst), (ins GPR:$lhs, t_imm_s4:$rhs), IIC_iALUi,
"sub\t$dst, $rhs", []>,
- T1Misc<{0,0,0,0,1,?,?}>; // A6.2.5 & A8.6.215
+ T1Misc<{0,0,0,0,1,?,?}> {
+ // A6.2.5 & A8.6.214
+ bits<7> rhs;
+ let Inst{6-0} = rhs;
+}
-// ADD rm, sp
+// ADD <Rm>, sp
def tADDrSP : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
"add\t$dst, $rhs", []>,
T1Special<{0,0,?,?}> {
- let Inst{6-3} = 0b1101; // A8.6.9 Encoding T1
+ // A8.6.9 Encoding T1
+ bits<4> dst;
+ let Inst{7} = dst{3};
+ let Inst{6-3} = 0b1101;
+ let Inst{2-0} = dst{2-0};
}
-// ADD sp, rm
+// ADD sp, <Rm>
def tADDspr : TIt<(outs GPR:$dst), (ins GPR:$lhs, GPR:$rhs), IIC_iALUr,
"add\t$dst, $rhs", []>,
T1Special<{0,0,?,?}> {
// A8.6.9 Encoding T2
+ bits<4> dst;
let Inst{7} = 1;
+ let Inst{6-3} = dst;
let Inst{2-0} = 0b101;
}
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