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Change OdinLLVMBuildTransmute when to deal with loads

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gingerBill
2021-03-29 14:07:25 +01:00
parent 8239cd34eb
commit 253a3edd30
1 changed files with 4 additions and 9 deletions
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src/llvm_backend.cpp
+4 -9
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@@ -2822,6 +2822,8 @@ LLVMValueRef OdinLLVMBuildTransmute(lbProcedure *p, LLVMValueRef val, LLVMTypeRe
i64 src_size = lb_sizeof(src_type); i64 src_size = lb_sizeof(src_type);
i64 dst_size = lb_sizeof(dst_type); i64 dst_size = lb_sizeof(dst_type);
i64 src_align = lb_alignof(src_type);
i64 dst_align = lb_alignof(dst_type);
LLVMTypeKind src_kind = LLVMGetTypeKind(src_type); LLVMTypeKind src_kind = LLVMGetTypeKind(src_type);
LLVMTypeKind dst_kind = LLVMGetTypeKind(dst_type); LLVMTypeKind dst_kind = LLVMGetTypeKind(dst_type);
@@ -2859,19 +2861,12 @@ LLVMValueRef OdinLLVMBuildTransmute(lbProcedure *p, LLVMValueRef val, LLVMTypeRe
} }
general_end:; general_end:;
if (LLVMIsALoadInst(val) && src_size <= dst_size) { if (LLVMIsALoadInst(val) && src_size >= dst_size) {
LLVMValueRef val_ptr = LLVMGetOperand(val, 0); LLVMValueRef val_ptr = LLVMGetOperand(val, 0);
val_ptr = LLVMBuildPointerCast(p->builder, val_ptr, LLVMPointerType(dst_type, 0), ""); val_ptr = LLVMBuildPointerCast(p->builder, val_ptr, LLVMPointerType(dst_type, 0), "");
LLVMValueRef loaded_val = LLVMBuildLoad(p->builder, val_ptr, ""); LLVMValueRef loaded_val = LLVMBuildLoad(p->builder, val_ptr, "");
// TODO(bill): Figure out why this doesn't work // LLVMSetAlignment(loaded_val, gb_min(src_align, dst_align));
// 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; return loaded_val;
} else { } else {