From 3359d0323a3115601b49ac7d6860c8b15babb491 Mon Sep 17 00:00:00 2001 From: gingerBill Date: Tue, 30 Mar 2021 20:38:04 +0100 Subject: Change `>>` behaviour in LLVM to prevent stupid UB --- src/ir.cpp | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) (limited to 'src/ir.cpp') diff --git a/src/ir.cpp b/src/ir.cpp index 090967ad8..34d4f79c1 100644 --- a/src/ir.cpp +++ b/src/ir.cpp @@ -4642,7 +4642,6 @@ handle_op: irValue *bit_size = ir_value_constant(type, exact_value_i64(8*type_size_of(type))); irValue *width_test = ir_emit(proc, ir_instr_binary_op(proc, Token_Lt, bits, bit_size, t_llvm_bool)); - irValue *zero = ir_value_constant(type, exact_value_i64(0)); irValue *res = ir_emit(proc, ir_instr_binary_op(proc, op, left, bits, type)); return ir_emit_select(proc, width_test, res, zero); @@ -4656,11 +4655,11 @@ handle_op: irValue *bits = right; irValue *bit_size = ir_value_constant(type, exact_value_i64(8*type_size_of(type))); - irValue *max = ir_value_constant(type, exact_value_i64(8*type_size_of(type)-1)); irValue *width_test = ir_emit(proc, ir_instr_binary_op(proc, Token_Lt, bits, bit_size, t_llvm_bool)); - bits = ir_emit_select(proc, width_test, bits, max); - return ir_emit(proc, ir_instr_binary_op(proc, op, left, bits, type)); + irValue *zero = ir_value_constant(type, exact_value_i64(0)); + irValue *res = ir_emit(proc, ir_instr_binary_op(proc, op, left, bits, type)); + return ir_emit_select(proc, width_test, res, zero); } case Token_AndNot: { -- cgit v1.2.3