[llvm] r195488 - patchpoint: factor SD builder code for live vars. Plain stackmap also optimizes Constant values now.
Andrew Trick
atrick at apple.com
Fri Nov 22 11:07:36 PST 2013
Author: atrick
Date: Fri Nov 22 13:07:36 2013
New Revision: 195488
URL: http://llvm.org/viewvc/llvm-project?rev=195488&view=rev
Log:
patchpoint: factor SD builder code for live vars. Plain stackmap also optimizes Constant values now.
Modified:
llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
llvm/trunk/test/CodeGen/X86/stackmap.ll
Modified: llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp?rev=195488&r1=195487&r2=195488&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp (original)
+++ llvm/trunk/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp Fri Nov 22 13:07:36 2013
@@ -6781,6 +6781,23 @@ SelectionDAGBuilder::LowerCallOperands(c
return TLI->LowerCallTo(CLI);
}
+/// \brief Add a stack map intrinsic call's live variable operands to a stackmap
+/// or patchpoint target node's operand list.
+static void addStackMapLiveVars(const CallInst &CI, unsigned StartIdx,
+ SmallVectorImpl<SDValue> &Ops,
+ SelectionDAGBuilder &Builder) {
+ for (unsigned i = StartIdx, e = CI.getNumArgOperands(); i != e; ++i) {
+ SDValue OpVal = Builder.getValue(CI.getArgOperand(i));
+ if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(OpVal)) {
+ Ops.push_back(
+ Builder.DAG.getTargetConstant(StackMaps::ConstantOp, MVT::i64));
+ Ops.push_back(
+ Builder.DAG.getTargetConstant(C->getSExtValue(), MVT::i64));
+ } else
+ Ops.push_back(OpVal);
+ }
+}
+
/// \brief Lower llvm.experimental.stackmap directly to its target opcode.
void SelectionDAGBuilder::visitStackmap(const CallInst &CI) {
// void @llvm.experimental.stackmap(i32 <id>, i32 <numShadowBytes>,
@@ -6814,8 +6831,7 @@ void SelectionDAGBuilder::visitStackmap(
cast<ConstantSDNode>(tmp)->getZExtValue(), MVT::i32));
}
// Push live variables for the stack map.
- for (unsigned i = 2, e = CI.getNumArgOperands(); i != e; ++i)
- Ops.push_back(getValue(CI.getArgOperand(i)));
+ addStackMapLiveVars(CI, 2, Ops, *this);
// Push the chain (this is originally the first operand of the call, but
// becomes now the last or second to last operand).
@@ -6923,17 +6939,7 @@ void SelectionDAGBuilder::visitPatchpoin
Ops.push_back(*i);
// Push live variables for the stack map.
- for (unsigned i = NumMetaOpers + NumArgs, e = CI.getNumArgOperands();
- i != e; ++i) {
- SDValue OpVal = getValue(CI.getArgOperand(i));
- if (ConstantSDNode *C = dyn_cast<ConstantSDNode>(OpVal)) {
- Ops.push_back(
- DAG.getTargetConstant(StackMaps::ConstantOp, MVT::i64));
- Ops.push_back(
- DAG.getTargetConstant(C->getSExtValue(), MVT::i64));
- } else
- Ops.push_back(OpVal);
- }
+ addStackMapLiveVars(CI, NumMetaOpers + NumArgs, Ops, *this);
// Push the register mask info.
if (hasGlue)
Modified: llvm/trunk/test/CodeGen/X86/stackmap.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/stackmap.ll?rev=195488&r1=195487&r2=195488&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/stackmap.ll (original)
+++ llvm/trunk/test/CodeGen/X86/stackmap.ll Fri Nov 22 13:07:36 2013
@@ -9,7 +9,7 @@
; CHECK-NEXT: .long 1
; CHECK-NEXT: .quad 4294967296
; Num Callsites
-; CHECK-NEXT: .long 11
+; CHECK-NEXT: .long 12
; Constant arguments
;
@@ -287,6 +287,24 @@ define void @subRegOffset(i16 %arg) {
ret void
}
+; Map a constant value.
+;
+; CHECK: .long 15
+; CHECK-LABEL: .long L{{.*}}-_liveConstant
+; CHECK-NEXT: .short 0
+; 1 location
+; CHECK-NEXT: .short 1
+; Loc 0: SmallConstant
+; CHECK-NEXT: .byte 4
+; CHECK-NEXT: .byte 8
+; CHECK-NEXT: .short 0
+; CHECK-NEXT: .long 33
+
+define void @liveConstant() {
+ tail call void (i32, i32, ...)* @llvm.experimental.stackmap(i32 15, i32 5, i32 33)
+ ret void
+}
+
declare void @llvm.experimental.stackmap(i32, i32, ...)
declare void @llvm.experimental.patchpoint.void(i32, i32, i8*, i32, ...)
declare i64 @llvm.experimental.patchpoint.i64(i32, i32, i8*, i32, ...)
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