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fix tripping LLVM assertion in const unions

master
Andrew Kelley 2019-10-01 17:39:31 -04:00
parent c1a05f0581
commit a8d6954c23
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1 changed files with 2 additions and 3 deletions
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5
src/codegen.cpp
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@ -6764,13 +6764,12 @@ check: switch (const_val->special) {
assert(LLVMGetTypeKind(field_ty) == LLVMIntegerTypeKind);
fields[type_struct_field->gen_index] = val;
} else {
const LLVMValueRef MASK = LLVMConstInt(LLVMInt8Type(), 255, false);
const LLVMValueRef AMT = LLVMConstInt(LLVMInt8Type(), 8, false);
const LLVMValueRef AMT = LLVMConstInt(LLVMTypeOf(val), 8, false);
LLVMValueRef *values = allocate<LLVMValueRef>(size_in_bytes);
for (size_t i = 0; i < size_in_bytes; i++) {
const size_t idx = is_big_endian ? size_in_bytes - 1 - i : i;
values[idx] = LLVMConstTruncOrBitCast(LLVMConstAnd(val, MASK), LLVMInt8Type());
values[idx] = LLVMConstTruncOrBitCast(val, LLVMInt8Type());
val = LLVMConstLShr(val, AMT);
}