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Don't drop function argument debug info in the LoadableByAddress transformation

Browse Source 
rdar://problem/36392957
This commit is contained in:
Adrian Prantl
2018-01-10 08:57:40 -08:00
parent ea848d947d
commit cb125bd3f9
2 changed files with 19 additions and 3 deletions
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7
lib/IRGen/LoadableByAddress.cpp
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@@ -397,7 +397,7 @@ struct StructLoweringState {
SmallVector<SILInstruction *, 16> destroyValueInstsToMod;
// All debug instructions.
// to be modified *only if* the operands are used in "real" instructions
SmallVector<SILInstruction *, 16> debugInstsToMod;
SmallVector<DebugValueInst *, 16> debugInstsToMod;
StructLoweringState(SILFunction *F, irgen::IRGenModule &Mod)
: F(F), Mod(Mod) {}
@@ -1832,7 +1832,7 @@ static void rewriteFunction(StructLoweringState &pass,
instr->getParent()->erase(instr);
}
for (SILInstruction *instr : pass.debugInstsToMod) {
for (DebugValueInst *instr : pass.debugInstsToMod) {
assert(instr->getAllOperands().size() == 1 &&
"Debug instructions have one operand");
for (Operand &operand : instr->getAllOperands()) {
@@ -1847,7 +1847,8 @@ static void rewriteFunction(StructLoweringState &pass,
assert(currOperand->getType().isAddress() &&
"Expected an address type");
SILBuilderWithScope debugBuilder(instr);
debugBuilder.createDebugValueAddr(instr->getLoc(), currOperand);
debugBuilder.createDebugValueAddr(instr->getLoc(), currOperand,
instr->getVarInfo());
instr->getParent()->erase(instr);
}
}

15
test/DebugInfo/LoadableByAddress-argument.swift Normal file
View File

@@ -0,0 +1,15 @@
// RUN: %target-swift-frontend %s -emit-ir -g -o - | %FileCheck %s
public struct Large {
let field1 : Int64 = 1
let field2 : Int64 = 2
let field3 : Int64 = 3
let field4 : Int64 = 4
let field5 : Int64 = 5
let field6 : Int64 = 6
let field7 : Int64 = 7
let field8 : Int64 = 8
}
// CHECK: !DILocalVariable(name: "largeArg", arg: 1
public func f(_ largeArg : Large) {}