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Fixed an issue with SIMD vector equality.

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Comparing SIMD vectors with `==` was checking that the mask of elements
that matched was not 0, meaning it succeeded if *any* element was equal,
rather than if *all* elements were equal.
This commit is contained in:
Barinzaya
2025-02-20 17:05:07 -05:00
parent c25ac939d4
commit 266e84103e
1 changed files with 10 additions and 1 deletions
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11
src/llvm_backend_expr.cpp
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@@ -3004,7 +3004,16 @@ gb_internal lbValue lb_emit_comp(lbProcedure *p, TokenKind op_kind, lbValue left
LLVMTypeRef mask_int_type = LLVMIntTypeInContext(p->module->ctx, cast(unsigned)(8*type_size_of(a)));
LLVMValueRef mask_int = LLVMBuildBitCast(p->builder, mask, mask_int_type, "");
res.value = LLVMBuildICmp(p->builder, LLVMIntNE, mask_int, LLVMConstNull(LLVMTypeOf(mask_int)), "");
switch (op_kind) {
case Token_CmpEq:
res.value = LLVMBuildICmp(p->builder, LLVMIntEQ, mask_int, LLVMConstInt(mask_int_type, U64_MAX, true), "");
break;
case Token_NotEq:
res.value = LLVMBuildICmp(p->builder, LLVMIntNE, mask_int, LLVMConstNull(mask_int_type), "");
break;
}
return res;
} else {