search for: immclass

Displaying 3 results from an estimated 3 matches for "immclass".

2009 Jun 15
0
[LLVMdev] Regular Expressions
On Jun 15, 2009, at 11:33 AM, David Greene wrote: > To reduce redundancy, developers must be able to write generic > patterns > like this: > > [(set DSTREGCLASS:$dst, // rr, rrr > (xor (INTSRCTYPE (bitconvert (SRCTYPE SRCREGCLASS:$src1))), > (INTSRCTYPE (bitconvert (SRCTYPE SRCREGCLASS:$src2)))))], > > The substitution then fills in the appropriate types,
2009 Jun 15
2
[LLVMdev] Regular Expressions
Chris Lattner wrote: > However, I don't see any reason to base this off of strings. Instead > of passing down "f32" as a string, why not do something like this > pseudo code: > > class X86ValueType { > RegisterClass RegClass; > ... > } > > def X86_f32 : X86ValueType { > let RegClass = FR32; > ... }; > def X86_i32 :
2009 Jun 17
3
[LLVMdev] Regular Expressions
...strings because we need to be able to munge them for SSE vs. AVX. Passing multiple types (v4f32, v8f32, etc.) is not practical, it just obfuscates the top-level specification. Now we need some guts: multiclass sse41_avx_fp_binary_vector_osta_vintrinsic_rmi_rrmi< bits<8> opc, PatFrag ImmClass, string OpcodeString, string Intrinsic, string BaseType, list<list<dag>> ipatterns = [], string asm = "" > { def rr_Int : ... def rm_Int : ... def V#NAME#_128rrr_Int : fp_binary_vector_irrr< opc, // I'm not even sure this field reference will...