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[FEA] Add support for typed constant in debug info metadata emission. #1326

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Merged
esc merged 2 commits into from
Oct 23, 2025
Merged

[FEA] Add support for typed constant in debug info metadata emission. #1326

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ccc99ca
Add support for typed constant when in debug info metadata emission.
jiel-nv Oct 9, 2025
4da5a4b
fix the flake8 reported format issues
jiel-nv Oct 10, 2025
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4 changes: 4 additions & 0 deletions llvmlite/ir/values.py
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Original file line number Diff line number Diff line change
Expand Up @@ -744,6 +744,10 @@ def descr(self, buf):
strvalue = '"{}"'.format(_escape_string(value))
elif isinstance(value, int):
strvalue = str(value)
elif isinstance(value, Constant):
# Support for typed constants (e.g., i32 1, i8 2)
# This calls Constant._to_string() which formats as "type value"
strvalue = str(value)
elif isinstance(value, NamedValue):
strvalue = value.get_reference()
else:
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43 changes: 43 additions & 0 deletions llvmlite/tests/test_ir.py
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Original file line number Diff line number Diff line change
Expand Up @@ -548,6 +548,49 @@ def test_debug_info_3(self):
'name: "i64", size: 64)', strmod)
self.assert_valid_ir(mod)

def test_debug_info_4(self):
# Typed constant as output value of debug info fields
mod = self.module()
# Create base types first
di_base_i32 = mod.add_debug_info("DIBasicType", {
"name": "int32",
"size": 32,
"encoding": ir.DIToken("DW_ATE_signed")
})
di_base_i8 = mod.add_debug_info("DIBasicType", {
"name": "int8",
"size": 8,
"encoding": ir.DIToken("DW_ATE_signed")
})
# Create debug info nodes with typed constants
mod.add_debug_info("DIDerivedType", {
"tag": ir.DIToken("DW_TAG_member"),
"name": "field_i32",
"baseType": di_base_i32,
"size": 32,
"extraData": ir.IntType(32)(1)
})
mod.add_debug_info("DIDerivedType", {
"tag": ir.DIToken("DW_TAG_member"),
"name": "field_i8",
"baseType": di_base_i8,
"size": 8,
"extraData": ir.IntType(8)(2)
})
# Check output
strmod = str(mod)
self.assert_ir_line('!0 = !DIBasicType(encoding: DW_ATE_signed, '
'name: "int32", size: 32)', strmod)
self.assert_ir_line('!1 = !DIBasicType(encoding: DW_ATE_signed, '
'name: "int8", size: 8)', strmod)
self.assert_ir_line(
'!2 = !DIDerivedType(baseType: !0, extraData: i32 1, '
'name: "field_i32", size: 32, tag: DW_TAG_member)', strmod)
self.assert_ir_line(
'!3 = !DIDerivedType(baseType: !1, extraData: i8 2, '
'name: "field_i8", size: 8, tag: DW_TAG_member)', strmod)
self.assert_valid_ir(mod)

def test_debug_info_gvar(self):
# This test defines a module with a global variable named 'gvar'.
# When the module is compiled and linked with a main function, gdb can
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