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Restore additional GEP deref for llvm.dbg.declare for LLVM < 5

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This commit is contained in:
Martin 2017-09-08 00:02:12 +02:00
parent 8cc5ff6e79
commit e4e7eaa0da
3 changed files with 16 additions and 5 deletions
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10
gen/nested.cpp
View file

@ -146,6 +146,11 @@ DValue *DtoNestedVariable(Loc &loc, Type *astype, VarDeclaration *vd,
}
if (!skipDIDeclaration && global.params.symdebug) {
#if LDC_LLVM_VER < 500
// Because we are passing a GEP instead of an alloca to
// llvm.dbg.declare, we have to make the address dereference explicit.
gIR->DBuilder.OpDeref(dwarfAddrOps);
#endif
gIR->DBuilder.EmitLocalVariable(gep, vd, nullptr, false,
/*forceAsLocal=*/true, false, dwarfAddrOps);
}
@ -499,6 +504,11 @@ void DtoCreateNestedContext(FuncGenState &funcGen) {
}
if (global.params.symdebug) {
#if LDC_LLVM_VER < 500
// Because we are passing a GEP instead of an alloca to
// llvm.dbg.declare, we have to make the address dereference explicit.
gIR->DBuilder.OpDeref(dwarfAddrOps);
#endif
gIR->DBuilder.EmitLocalVariable(gep, vd, nullptr, false, false, false,
dwarfAddrOps);
}

9
tests/debuginfo/nested_cdb.d
View file

@ -1,3 +1,4 @@
// REQUIRES: atleast_llvm500
// REQUIRES: Windows
// REQUIRES: cdb
// RUN: %ldc -g -of=%t.exe %s
@ -12,7 +13,7 @@
void encloser(int arg0, ref int arg1)
{
int enc_n = 123;
// CDB: bp `nested_cdb.d:15`
// CDB: bp `nested_cdb.d:16`
// CDB: g
// CDB: dv /t
// CHECK: int arg0 = 0n1
@ -26,7 +27,7 @@ void encloser(int arg0, ref int arg1)
void nested(int nes_i)
{
int blub = arg0 + arg1 + enc_n;
// CDB: bp `nested_cdb.d:29`
// CDB: bp `nested_cdb.d:30`
// CDB: g
// CDB: dv /t
// CHECK: int arg0 = 0n1
@ -35,7 +36,7 @@ void encloser(int arg0, ref int arg1)
// CDB: ?? *arg1
// CHECK: int 0n2
arg0 = arg1 = enc_n = nes_i;
// CDB: bp `nested_cdb.d:38`
// CDB: bp `nested_cdb.d:39`
// CDB: g
// CDB: dv /t
// CHECK: int arg0 = 0n456
@ -46,7 +47,7 @@ void encloser(int arg0, ref int arg1)
}
nested(456);
// CDB: bp `nested_cdb.d:49`
// CDB: bp `nested_cdb.d:50`
// CDB: g
// CDB: dv /t
// CHECK: int arg0 = 0n456

2
tests/debuginfo/nested_gdb.d
View file

@ -43,7 +43,7 @@ void encloser(int arg0, ref int arg1)
// GDB: b 43
// GDB: c
// GDB: p arg0
// CHECK: $10 = 456
// no-CHECK: $10 = 456 (`<optimized out>` for LLVM < 5.0)
// GDB: p arg1
// CHECK: $11 = (int &) @{{0x[0-9a-f]*}}: 456
// GDB: p enc_n