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-rw-r--r--lib/Target/ARM/ARMInstrThumb.td127
1 files changed, 54 insertions, 73 deletions
diff --git a/lib/Target/ARM/ARMInstrThumb.td b/lib/Target/ARM/ARMInstrThumb.td
index cedb547..6335229 100644
--- a/lib/Target/ARM/ARMInstrThumb.td
+++ b/lib/Target/ARM/ARMInstrThumb.td
@@ -1,4 +1,4 @@
-//===- ARMInstrThumb.td - Thumb support for ARM ------------*- tablegen -*-===//
+//===-- ARMInstrThumb.td - Thumb support for ARM -----------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
@@ -91,6 +91,12 @@ def t_imm0_508s4 : Operand<i32> {
let ParserMatchClass = t_imm0_508s4_asmoperand;
let OperandType = "OPERAND_IMMEDIATE";
}
+// Alias use only, so no printer is necessary.
+def t_imm0_508s4_neg_asmoperand: AsmOperandClass { let Name = "Imm0_508s4Neg"; }
+def t_imm0_508s4_neg : Operand<i32> {
+ let ParserMatchClass = t_imm0_508s4_neg_asmoperand;
+ let OperandType = "OPERAND_IMMEDIATE";
+}
// Define Thumb specific addressing modes.
@@ -345,6 +351,11 @@ def tSUBspi : T1pIt<(outs GPRsp:$Rdn), (ins GPRsp:$Rn, t_imm0_508s4:$imm),
let DecoderMethod = "DecodeThumbAddSPImm";
}
+def : tInstAlias<"add${p} sp, $imm",
+ (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
+def : tInstAlias<"add${p} sp, sp, $imm",
+ (tSUBspi SP, t_imm0_508s4_neg:$imm, pred:$p)>;
+
// Can optionally specify SP as a three operand instruction.
def : tInstAlias<"add${p} sp, sp, $imm",
(tADDspi SP, t_imm0_508s4:$imm, pred:$p)>;
@@ -387,6 +398,7 @@ let isBranch = 1, isTerminator = 1, isBarrier = 1, isIndirectBranch = 1 in {
bits<4> Rm;
let Inst{6-3} = Rm;
let Inst{2-0} = 0b000;
+ let Unpredictable{2-0} = 0b111;
}
}
@@ -404,15 +416,13 @@ let isReturn = 1, isTerminator = 1, isBarrier = 1 in {
// prevent stack-pointer assignments that appear immediately before calls from
// potentially appearing dead.
let isCall = 1,
- // On non-Darwin platforms R9 is callee-saved.
- Defs = [R0, R1, R2, R3, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
- Uses = [SP] in {
+ Defs = [LR], Uses = [SP] in {
// Also used for Thumb2
def tBL : TIx2<0b11110, 0b11, 1,
(outs), (ins pred:$p, t_bltarget:$func, variable_ops), IIC_Br,
"bl${p}\t$func",
[(ARMtcall tglobaladdr:$func)]>,
- Requires<[IsThumb, IsNotDarwin]> {
+ Requires<[IsThumb]> {
bits<22> func;
let Inst{26} = func{21};
let Inst{25-16} = func{20-11};
@@ -426,7 +436,7 @@ let isCall = 1,
(outs), (ins pred:$p, t_blxtarget:$func, variable_ops), IIC_Br,
"blx${p}\t$func",
[(ARMcall tglobaladdr:$func)]>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]> {
+ Requires<[IsThumb, HasV5T]> {
bits<21> func;
let Inst{25-16} = func{20-11};
let Inst{13} = 1;
@@ -439,7 +449,7 @@ let isCall = 1,
def tBLXr : TI<(outs), (ins pred:$p, GPR:$func, variable_ops), IIC_Br,
"blx${p}\t$func",
[(ARMtcall GPR:$func)]>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>,
+ Requires<[IsThumb, HasV5T]>,
T1Special<{1,1,1,?}> { // A6.2.3 & A8.6.24;
bits<4> func;
let Inst{6-3} = func;
@@ -450,38 +460,7 @@ let isCall = 1,
def tBX_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
4, IIC_Br,
[(ARMcall_nolink tGPR:$func)]>,
- Requires<[IsThumb, IsThumb1Only, IsNotDarwin]>;
-}
-
-let isCall = 1,
- // On Darwin R9 is call-clobbered.
- // R7 is marked as a use to prevent frame-pointer assignments from being
- // moved above / below calls.
- Defs = [R0, R1, R2, R3, R9, R12, LR, QQQQ0, QQQQ2, QQQQ3, CPSR, FPSCR],
- Uses = [R7, SP] in {
- // Also used for Thumb2
- def tBLr9 : tPseudoExpand<(outs), (ins pred:$p, t_bltarget:$func, variable_ops),
- 4, IIC_Br, [(ARMtcall tglobaladdr:$func)],
- (tBL pred:$p, t_bltarget:$func)>,
- Requires<[IsThumb, IsDarwin]>;
-
- // ARMv5T and above, also used for Thumb2
- def tBLXi_r9 : tPseudoExpand<(outs), (ins pred:$p, t_blxtarget:$func, variable_ops),
- 4, IIC_Br, [(ARMcall tglobaladdr:$func)],
- (tBLXi pred:$p, t_blxtarget:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
-
- // Also used for Thumb2
- def tBLXr_r9 : tPseudoExpand<(outs), (ins pred:$p, GPR:$func, variable_ops),
- 2, IIC_Br, [(ARMtcall GPR:$func)],
- (tBLXr pred:$p, GPR:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
-
- // ARMv4T
- def tBXr9_CALL : tPseudoInst<(outs), (ins tGPR:$func, variable_ops),
- 4, IIC_Br,
- [(ARMcall_nolink tGPR:$func)]>,
- Requires<[IsThumb, IsThumb1Only, IsDarwin]>;
+ Requires<[IsThumb, IsThumb1Only]>;
}
let isBranch = 1, isTerminator = 1, isBarrier = 1 in {
@@ -523,28 +502,22 @@ let isBranch = 1, isTerminator = 1 in
// Tail calls
let isCall = 1, isTerminator = 1, isReturn = 1, isBarrier = 1 in {
- // Darwin versions.
- let Defs = [R0, R1, R2, R3, R9, R12, QQQQ0, QQQQ2, QQQQ3, PC],
- Uses = [SP] in {
- // tTAILJMPd: Darwin version uses a Thumb2 branch (no Thumb1 tail calls
- // on Darwin), so it's in ARMInstrThumb2.td.
+ // IOS versions.
+ let Uses = [SP] in {
def tTAILJMPr : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
4, IIC_Br, [],
(tBX GPR:$dst, (ops 14, zero_reg))>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb]>;
}
- // Non-Darwin versions (the difference is R9).
- let Defs = [R0, R1, R2, R3, R12, QQQQ0, QQQQ2, QQQQ3, PC],
- Uses = [SP] in {
+ // tTAILJMPd: IOS version uses a Thumb2 branch (no Thumb1 tail calls
+ // on IOS), so it's in ARMInstrThumb2.td.
+ // Non-IOS version:
+ let Uses = [SP] in {
def tTAILJMPdND : tPseudoExpand<(outs),
(ins t_brtarget:$dst, pred:$p, variable_ops),
4, IIC_Br, [],
(tB t_brtarget:$dst, pred:$p)>,
- Requires<[IsThumb, IsNotDarwin]>;
- def tTAILJMPrND : tPseudoExpand<(outs), (ins tcGPR:$dst, variable_ops),
- 4, IIC_Br, [],
- (tBX GPR:$dst, (ops 14, zero_reg))>,
- Requires<[IsThumb, IsNotDarwin]>;
+ Requires<[IsThumb, IsNotIOS]>;
}
}
@@ -652,7 +625,7 @@ def tLDRspi : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_sp:$addr), IIC_iLoad_i,
}
// Load tconstpool
-// FIXME: Use ldr.n to work around a Darwin assembler bug.
+// FIXME: Use ldr.n to work around a darwin assembler bug.
let canFoldAsLoad = 1, isReMaterializable = 1, isCodeGenOnly = 1 in
def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
"ldr", ".n\t$Rt, $addr",
@@ -666,10 +639,9 @@ def tLDRpci : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
}
// FIXME: Remove this entry when the above ldr.n workaround is fixed.
-// For disassembly use only.
-def tLDRpciDIS : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
- "ldr", "\t$Rt, $addr",
- [/* disassembly only */]>,
+// For assembly/disassembly use only.
+def tLDRpciASM : T1pIs<(outs tGPR:$Rt), (ins t_addrmode_pc:$addr), IIC_iLoad_i,
+ "ldr", "\t$Rt, $addr", []>,
T1Encoding<{0,1,0,0,1,?}> {
// A6.2 & A8.6.59
bits<3> Rt;
@@ -1131,9 +1103,6 @@ def tRSB : // A8.6.141
"rsb", "\t$Rd, $Rn, #0",
[(set tGPR:$Rd, (ineg tGPR:$Rn))]>;
-def : tInstAlias<"neg${s}${p} $Rd, $Rm",
- (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
-
// Subtract with carry register
let Uses = [CPSR] in
def tSBC : // A8.6.151
@@ -1259,19 +1228,24 @@ def tTPsoft : tPseudoInst<(outs), (ins), 4, IIC_Br,
// preserve all of the callee-saved resgisters, which is exactly what we want.
// $val is a scratch register for our use.
let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
- hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1 in
+ hasSideEffects = 1, isBarrier = 1, isCodeGenOnly = 1,
+ usesCustomInserter = 1 in
def tInt_eh_sjlj_setjmp : ThumbXI<(outs),(ins tGPR:$src, tGPR:$val),
AddrModeNone, 0, NoItinerary, "","",
[(set R0, (ARMeh_sjlj_setjmp tGPR:$src, tGPR:$val))]>;
-// FIXME: Non-Darwin version(s)
+// FIXME: Non-IOS version(s)
let isBarrier = 1, hasSideEffects = 1, isTerminator = 1, isCodeGenOnly = 1,
Defs = [ R7, LR, SP ] in
def tInt_eh_sjlj_longjmp : XI<(outs), (ins GPR:$src, GPR:$scratch),
AddrModeNone, 0, IndexModeNone,
Pseudo, NoItinerary, "", "",
[(ARMeh_sjlj_longjmp GPR:$src, GPR:$scratch)]>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb, IsIOS]>;
+
+let Defs = [ R0, R1, R2, R3, R4, R5, R6, R7, R12, CPSR ],
+ isBarrier = 1 in
+def tInt_eh_sjlj_dispatchsetup : PseudoInst<(outs), (ins), NoItinerary, []>;
//===----------------------------------------------------------------------===//
// Non-Instruction Patterns
@@ -1309,20 +1283,14 @@ def : T1Pat<(ARMWrapperJT tjumptable:$dst, imm:$id),
// Direct calls
def : T1Pat<(ARMtcall texternalsym:$func), (tBL texternalsym:$func)>,
- Requires<[IsThumb, IsNotDarwin]>;
-def : T1Pat<(ARMtcall texternalsym:$func), (tBLr9 texternalsym:$func)>,
- Requires<[IsThumb, IsDarwin]>;
+ Requires<[IsThumb]>;
def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi texternalsym:$func)>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>;
-def : Tv5Pat<(ARMcall texternalsym:$func), (tBLXi_r9 texternalsym:$func)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
+ Requires<[IsThumb, HasV5T]>;
// Indirect calls to ARM routines
def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr GPR:$dst)>,
- Requires<[IsThumb, HasV5T, IsNotDarwin]>;
-def : Tv5Pat<(ARMcall GPR:$dst), (tBLXr_r9 GPR:$dst)>,
- Requires<[IsThumb, HasV5T, IsDarwin]>;
+ Requires<[IsThumb, HasV5T]>;
// zextload i1 -> zextload i8
def : T1Pat<(zextloadi1 t_addrmode_rrs1:$addr),
@@ -1434,3 +1402,16 @@ def : InstAlias<"nop", (tMOVr R8, R8, 14, 0)>,Requires<[IsThumb, IsThumb1Only]>;
// nothing).
def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
def : tInstAlias<"cps$imod", (tCPS imod_op:$imod, 0)>;
+
+// "neg" is and alias for "rsb rd, rn, #0"
+def : tInstAlias<"neg${s}${p} $Rd, $Rm",
+ (tRSB tGPR:$Rd, s_cc_out:$s, tGPR:$Rm, pred:$p)>;
+
+
+// Implied destination operand forms for shifts.
+def : tInstAlias<"lsl${s}${p} $Rdm, $imm",
+ (tLSLri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm0_31:$imm, pred:$p)>;
+def : tInstAlias<"lsr${s}${p} $Rdm, $imm",
+ (tLSRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
+def : tInstAlias<"asr${s}${p} $Rdm, $imm",
+ (tASRri tGPR:$Rdm, cc_out:$s, tGPR:$Rdm, imm_sr:$imm, pred:$p)>;
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