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fix partial inlining of binary math operator using old value

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the code was abusing the internal IR API. fixed now.

closes #699
This commit is contained in:
Andrew Kelley 2018-03-08 17:15:55 -05:00
parent 028ec0f2c3
commit aaf2230ae8
2 changed files with 33 additions and 8 deletions
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16
src/ir.cpp
View file

@ -10595,9 +10595,9 @@ static TypeTableEntry *ir_analyze_bit_shift(IrAnalyze *ira, IrInstructionBinOp *
if (instr_is_comptime(op1) && instr_is_comptime(casted_op2)) {
ConstExprValue *op1_val = &op1->value;
ConstExprValue *op2_val = &casted_op2->value;
ConstExprValue *out_val = &bin_op_instruction->base.value;
bin_op_instruction->base.other = &bin_op_instruction->base;
IrInstruction *result_instruction = ir_get_const(ira, &bin_op_instruction->base);
ir_link_new_instruction(result_instruction, &bin_op_instruction->base);
ConstExprValue *out_val = &result_instruction->value;
int err;
if ((err = ir_eval_math_op(op1->value.type, op1_val, op_id, op2_val, out_val))) {
@ -10613,7 +10613,7 @@ static TypeTableEntry *ir_analyze_bit_shift(IrAnalyze *ira, IrInstructionBinOp *
return ira->codegen->builtin_types.entry_invalid;
}
ir_num_lit_fits_in_other_type(ira, &bin_op_instruction->base, op1->value.type, false);
ir_num_lit_fits_in_other_type(ira, result_instruction, op1->value.type, false);
return op1->value.type;
} else if (op1->value.type->id == TypeTableEntryIdNumLitInt) {
ir_add_error(ira, &bin_op_instruction->base,
@ -10765,9 +10765,9 @@ static TypeTableEntry *ir_analyze_bin_op_math(IrAnalyze *ira, IrInstructionBinOp
if (instr_is_comptime(casted_op1) && instr_is_comptime(casted_op2)) {
ConstExprValue *op1_val = &casted_op1->value;
ConstExprValue *op2_val = &casted_op2->value;
ConstExprValue *out_val = &bin_op_instruction->base.value;
bin_op_instruction->base.other = &bin_op_instruction->base;
IrInstruction *result_instruction = ir_get_const(ira, &bin_op_instruction->base);
ir_link_new_instruction(result_instruction, &bin_op_instruction->base);
ConstExprValue *out_val = &result_instruction->value;
int err;
if ((err = ir_eval_math_op(resolved_type, op1_val, op_id, op2_val, out_val))) {
@ -10789,7 +10789,7 @@ static TypeTableEntry *ir_analyze_bin_op_math(IrAnalyze *ira, IrInstructionBinOp
return ira->codegen->builtin_types.entry_invalid;
}
ir_num_lit_fits_in_other_type(ira, &bin_op_instruction->base, resolved_type, false);
ir_num_lit_fits_in_other_type(ira, result_instruction, resolved_type, false);
return resolved_type;
}

25
test/cases/eval.zig
View file

@ -395,3 +395,28 @@ test "comptime slice of undefined pointer of length 0" {
const slice2 = (&i32)(undefined)[100..100];
assert(slice2.len == 0);
}
fn copyWithPartialInline(s: []u32, b: []u8) void {
comptime var i: usize = 0;
inline while (i < 4) : (i += 1) {
s[i] = 0;
s[i] |= u32(b[i*4+0]) << 24;
s[i] |= u32(b[i*4+1]) << 16;
s[i] |= u32(b[i*4+2]) << 8;
s[i] |= u32(b[i*4+3]) << 0;
}
}
test "binary math operator in partially inlined function" {
var s: [4]u32 = undefined;
var b: [16]u8 = undefined;
for (b) |*r, i|
*r = u8(i + 1);
copyWithPartialInline(s[0..], b[0..]);
assert(s[0] == 0x1020304);
assert(s[1] == 0x5060708);
assert(s[2] == 0x90a0b0c);
assert(s[3] == 0xd0e0f10);
}