[llvm] r183094 - Sparc: Add support for indirect branch and blockaddress in Sparc backend.
Venkatraman Govindaraju
venkatra at cs.wisc.edu
Sun Jun 2 22:58:34 PDT 2013
Author: venkatra
Date: Mon Jun 3 00:58:33 2013
New Revision: 183094
URL: http://llvm.org/viewvc/llvm-project?rev=183094&view=rev
Log:
Sparc: Add support for indirect branch and blockaddress in Sparc backend.
Added:
llvm/trunk/test/CodeGen/SPARC/blockaddr.ll
Modified:
llvm/trunk/lib/Target/Sparc/SparcAsmPrinter.cpp
llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
llvm/trunk/lib/Target/Sparc/SparcISelLowering.h
llvm/trunk/lib/Target/Sparc/SparcInstrInfo.td
Modified: llvm/trunk/lib/Target/Sparc/SparcAsmPrinter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcAsmPrinter.cpp?rev=183094&r1=183093&r2=183094&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcAsmPrinter.cpp (original)
+++ llvm/trunk/lib/Target/Sparc/SparcAsmPrinter.cpp Mon Jun 3 00:58:33 2013
@@ -120,6 +120,9 @@ void SparcAsmPrinter::printOperand(const
case MachineOperand::MO_GlobalAddress:
O << *Mang->getSymbol(MO.getGlobal());
break;
+ case MachineOperand::MO_BlockAddress:
+ O << GetBlockAddressSymbol(MO.getBlockAddress())->getName();
+ break;
case MachineOperand::MO_ExternalSymbol:
O << MO.getSymbolName();
break;
Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp?rev=183094&r1=183093&r2=183094&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.cpp Mon Jun 3 00:58:33 2013
@@ -1258,6 +1258,7 @@ SparcTargetLowering::SparcTargetLowering
setOperationAction(ISD::GlobalAddress, getPointerTy(), Custom);
setOperationAction(ISD::GlobalTLSAddress, getPointerTy(), Custom);
setOperationAction(ISD::ConstantPool, getPointerTy(), Custom);
+ setOperationAction(ISD::BlockAddress, getPointerTy(), Custom);
// Sparc doesn't have sext_inreg, replace them with shl/sra
setOperationAction(ISD::SIGN_EXTEND_INREG, MVT::i16, Expand);
@@ -1460,6 +1461,12 @@ SDValue SparcTargetLowering::withTargetF
CP->getAlignment(),
CP->getOffset(), TF);
+ if (const BlockAddressSDNode *BA = dyn_cast<BlockAddressSDNode>(Op))
+ return DAG.getTargetBlockAddress(BA->getBlockAddress(),
+ Op.getValueType(),
+ 0,
+ TF);
+
if (const ExternalSymbolSDNode *ES = dyn_cast<ExternalSymbolSDNode>(Op))
return DAG.getTargetExternalSymbol(ES->getSymbol(),
ES->getValueType(0), TF);
@@ -1530,6 +1537,11 @@ SDValue SparcTargetLowering::LowerConsta
return makeAddress(Op, DAG);
}
+SDValue SparcTargetLowering::LowerBlockAddress(SDValue Op,
+ SelectionDAG &DAG) const {
+ return makeAddress(Op, DAG);
+}
+
static SDValue LowerFP_TO_SINT(SDValue Op, SelectionDAG &DAG) {
SDLoc dl(Op);
// Convert the fp value to integer in an FP register.
@@ -1752,6 +1764,7 @@ LowerOperation(SDValue Op, SelectionDAG
case ISD::GlobalTLSAddress:
llvm_unreachable("TLS not implemented for Sparc.");
case ISD::GlobalAddress: return LowerGlobalAddress(Op, DAG);
+ case ISD::BlockAddress: return LowerBlockAddress(Op, DAG);
case ISD::ConstantPool: return LowerConstantPool(Op, DAG);
case ISD::FP_TO_SINT: return LowerFP_TO_SINT(Op, DAG);
case ISD::SINT_TO_FP: return LowerSINT_TO_FP(Op, DAG);
Modified: llvm/trunk/lib/Target/Sparc/SparcISelLowering.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcISelLowering.h?rev=183094&r1=183093&r2=183094&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcISelLowering.h (original)
+++ llvm/trunk/lib/Target/Sparc/SparcISelLowering.h Mon Jun 3 00:58:33 2013
@@ -120,6 +120,7 @@ namespace llvm {
SDValue LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const;
SDValue LowerConstantPool(SDValue Op, SelectionDAG &DAG) const;
+ SDValue LowerBlockAddress(SDValue Op, SelectionDAG &DAG) const;
unsigned getSRetArgSize(SelectionDAG &DAG, SDValue Callee) const;
SDValue withTargetFlags(SDValue Op, unsigned TF, SelectionDAG &DAG) const;
Modified: llvm/trunk/lib/Target/Sparc/SparcInstrInfo.td
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/Sparc/SparcInstrInfo.td?rev=183094&r1=183093&r2=183094&view=diff
==============================================================================
--- llvm/trunk/lib/Target/Sparc/SparcInstrInfo.td (original)
+++ llvm/trunk/lib/Target/Sparc/SparcInstrInfo.td Mon Jun 3 00:58:33 2013
@@ -516,6 +516,20 @@ let isBarrier = 1 in
"ba $dst",
[(br bb:$dst)]>;
+//Indirect Branch
+let isTerminator = 1, isBarrier = 1,
+ hasDelaySlot = 1, isBranch =1,
+ isIndirectBranch = 1 in {
+ def BINDrr : F3_1<2, 0b111000,
+ (outs), (ins MEMrr:$ptr),
+ "jmp $ptr",
+ [(brind ADDRrr:$ptr)]>;
+ def BINDri : F3_2<2, 0b111000,
+ (outs), (ins MEMri:$ptr),
+ "jmp $ptr",
+ [(brind ADDRri:$ptr)]>;
+}
+
// FIXME: the encoding for the JIT should look at the condition field.
let Uses = [ICC] in
def BCOND : BranchSP<0, (ins brtarget:$dst, CCOp:$cc),
@@ -793,9 +807,15 @@ def : Pat<(SPlo tglobaladdr:$in), (ORri
def : Pat<(SPhi tconstpool:$in), (SETHIi tconstpool:$in)>;
def : Pat<(SPlo tconstpool:$in), (ORri (i32 G0), tconstpool:$in)>;
+// Blockaddress
+def : Pat<(SPhi tblockaddress:$in), (SETHIi tblockaddress:$in)>;
+def : Pat<(SPlo tblockaddress:$in), (ORri (i32 G0), tblockaddress:$in)>;
+
// Add reg, lo. This is used when taking the addr of a global/constpool entry.
def : Pat<(add iPTR:$r, (SPlo tglobaladdr:$in)), (ADDri $r, tglobaladdr:$in)>;
def : Pat<(add iPTR:$r, (SPlo tconstpool:$in)), (ADDri $r, tconstpool:$in)>;
+def : Pat<(add iPTR:$r, (SPlo tblockaddress:$in)),
+ (ADDri $r, tblockaddress:$in)>;
// Calls:
def : Pat<(call tglobaladdr:$dst),
Added: llvm/trunk/test/CodeGen/SPARC/blockaddr.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/SPARC/blockaddr.ll?rev=183094&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/SPARC/blockaddr.ll (added)
+++ llvm/trunk/test/CodeGen/SPARC/blockaddr.ll Mon Jun 3 00:58:33 2013
@@ -0,0 +1,77 @@
+; RUN: llc < %s -march=sparc -relocation-model=static -code-model=small | FileCheck --check-prefix=abs32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=small | FileCheck --check-prefix=abs32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=medium | FileCheck --check-prefix=abs44 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=static -code-model=large | FileCheck --check-prefix=abs64 %s
+; RUN: llc < %s -march=sparc -relocation-model=pic -code-model=medium | FileCheck --check-prefix=v8pic32 %s
+; RUN: llc < %s -march=sparcv9 -relocation-model=pic -code-model=medium | FileCheck --check-prefix=v9pic32 %s
+
+;
+; copied from test/CodeGen/Mips/blockaddr.ll and modified for SPARC
+;
+ at reg = common global i8* null, align 4
+
+define i8* @dummy(i8* %x) nounwind readnone noinline {
+entry:
+ ret i8* %x
+}
+
+; abs32: func_block_addr:
+; abs32: sethi %hi([[BLK:.+]]), [[R:%[gilo][0-7]]]
+; abs32: call dummy
+; abs32: add [[R]], %lo([[BLK]]), %o0
+; abs32: jmp %o0
+
+; abs44: func_block_addr:
+; abs44: sethi %h44([[BLK:.+]]), [[R:%[gilo][0-7]]]
+; abs44: add [[R]], %m44([[BLK]]), [[R1:%[gilo][0-7]]]
+; abs44: sllx [[R1]], 12, [[R2:%[gilo][0-7]]]
+; abs44: call dummy
+; abs44: add [[R2]], %l44([[BLK]]), %o0
+; abs44: jmp %o0
+
+; abs64: func_block_addr:
+; abs64: sethi %hi([[BLK:.+]]), [[R:%[gilo][0-7]]]
+; abs64: add [[R]], %lo([[BLK]]), [[R1:%[gilo][0-7]]]
+; abs64: sethi %hh([[BLK]]), [[R2:%[gilo][0-7]]]
+; abs64: add [[R2]], %hm([[BLK]]), [[R3:%[gilo][0-7]]]
+; abs64: sllx [[R3]], 32, [[R4:%[gilo][0-7]]]
+; abs64: call dummy
+; abs64: add [[R2]], [[R1]], %o0
+; abs64: jmp %o0
+
+
+; v8pic32: func_block_addr
+; v8pic32: sethi %hi(_GLOBAL_OFFSET_TABLE_+{{.+}}), [[R:%[gilo][0-7]]]
+; v8pic32: or [[R]], %lo(_GLOBAL_OFFSET_TABLE_+{{.+}}), [[R1:%[gilo][0-7]]]
+; v8pic32: add [[R1]], %o7, %[[R2:[gilo][0-7]]]
+; v8pic32: sethi %hi([[BLK:.+]]), [[R3:%[gilo][0-7]]]
+; v8pic32: add [[R3]], %lo([[BLK]]), %[[R4:[gilo][0-7]]]
+; v8pic32: call dummy
+; v8pic32: ld [%[[R2]]+%[[R4]]], %o0
+; v8pic32: jmp %o0
+
+
+; v9pic32: func_block_addr
+; v9pic32: sethi %hi(_GLOBAL_OFFSET_TABLE_+{{.+}}), [[R:%[gilo][0-7]]]
+; v9pic32: or [[R]], %lo(_GLOBAL_OFFSET_TABLE_+{{.+}}), [[R1:%[gilo][0-7]]]
+; v9pic32: add [[R1]], %o7, %[[R2:[gilo][0-7]]]
+; v9pic32: sethi %hi([[BLK:.+]]), [[R3:%[gilo][0-7]]]
+; v9pic32: add [[R3]], %lo([[BLK]]), %[[R4:[gilo][0-7]]]
+; v9pic32: call dummy
+; v9pic32: ldx [%[[R2]]+%[[R4]]], %o0
+; v9pic32: jmp %o0
+
+
+define void @func_block_addr() nounwind {
+entry:
+ %call = tail call i8* @dummy(i8* blockaddress(@func_block_addr, %baz))
+ indirectbr i8* %call, [label %baz, label %foo]
+
+foo: ; preds = %foo, %entry
+ store i8* blockaddress(@func_block_addr, %foo), i8** @reg, align 4
+ br label %foo
+
+baz: ; preds = %entry
+ store i8* null, i8** @reg, align 4
+ ret void
+}
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