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Improve matrix code generation for all supported platforms

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Through assembly optimization
This commit is contained in:
gingerBill
2021-10-25 01:03:16 +01:00
parent 79ad6f4564
commit d62c701a43
2 changed files with 47 additions and 3 deletions
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src/llvm_backend_utility.cpp
+20 -1
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@@ -1492,7 +1492,26 @@ lbValue lb_emit_mul_add(lbProcedure *p, lbValue a, lbValue b, lbValue c, Type *t
b = lb_emit_conv(p, b, t);
c = lb_emit_conv(p, c, t);
if (!is_type_different_to_arch_endianness(t) && is_type_float(t)) {
bool is_possible = !is_type_different_to_arch_endianness(t) && is_type_float(t);
if (is_possible) {
switch (build_context.metrics.arch) {
case TargetArch_amd64:
if (type_size_of(t) == 2) {
is_possible = false;
}
break;
case TargetArch_arm64:
// possible
break;
case TargetArch_386:
case TargetArch_wasm32:
is_possible = false;
break;
}
}
if (is_possible) {
char const *name = "llvm.fma";
unsigned id = LLVMLookupIntrinsicID(name, gb_strlen(name));
GB_ASSERT_MSG(id != 0, "Unable to find %s", name);