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Minor fix to OdinLLVMBuildTransmute

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gingerBill
2021-03-25 20:45:22 +00:00
parent 6668fd44cf
commit 04be6d190e
1 changed files with 13 additions and 2 deletions
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15
src/llvm_backend.cpp
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@@ -2856,10 +2856,21 @@ LLVMValueRef OdinLLVMBuildTransmute(lbProcedure *p, LLVMValueRef val, LLVMTypeRe
}
}
if (LLVMIsALoadInst(val)) {
if (LLVMIsALoadInst(val) && src_size <= dst_size) {
LLVMValueRef val_ptr = LLVMGetOperand(val, 0);
val_ptr = LLVMBuildPointerCast(p->builder, val_ptr, LLVMPointerType(dst_type, 0), "");
return LLVMBuildLoad(p->builder, val_ptr, "");
LLVMValueRef loaded_val = LLVMBuildLoad(p->builder, val_ptr, "");
// TODO(bill): Figure out why this doesn't work
// unsigned srca = cast(unsigned)LLVMConstIntGetZExtValue(LLVMAlignOf(src_type));
// unsigned dsta = cast(unsigned)LLVMConstIntGetZExtValue(LLVMAlignOf(dst_type));
unsigned srca = cast(unsigned)lb_alignof(src_type);
unsigned dsta = cast(unsigned)lb_alignof(dst_type);
LLVMSetAlignment(loaded_val, gb_min(srca, dsta));
return loaded_val;
} else {
GB_ASSERT(p->decl_block != p->curr_block);
LLVMPositionBuilderAtEnd(p->builder, p->decl_block->block);