[llvm] [Hexagon] Remove unreachable isel patterns. NFC (PR #162754)

[via llvm-commits]

llvmbot wrote:


<!--LLVM PR SUMMARY COMMENT-->

@llvm/pr-subscribers-backend-hexagon

Author: Craig Topper (topperc)

<details>
<summary>Changes</summary>

These patterns are for setcc with scalar result type and vector operands or shifts with vector result and scalar shift amount.

---
Full diff: https://github.com/llvm/llvm-project/pull/162754.diff


1 Files Affected:

- (modified) llvm/lib/Target/Hexagon/HexagonPatterns.td (-21) 


``````````diff
diff --git a/llvm/lib/Target/Hexagon/HexagonPatterns.td b/llvm/lib/Target/Hexagon/HexagonPatterns.td
index a0acfcf5518dc..85ce9447c2028 100644
--- a/llvm/lib/Target/Hexagon/HexagonPatterns.td
+++ b/llvm/lib/Target/Hexagon/HexagonPatterns.td
@@ -699,35 +699,20 @@ def: OpR_RR_pat<C2_cmpgtp,    setgt,          i1,   I64>;
 def: OpR_RR_pat<C2_cmpgtup,   setugt,         i1,   I64>;
 def: OpR_RR_pat<C2_cmpgtp,    RevCmp<setlt>,  i1,   I64>;
 def: OpR_RR_pat<C2_cmpgtup,   RevCmp<setult>, i1,   I64>;
-def: OpR_RR_pat<A2_vcmpbeq,   seteq,          i1,   V8I8>;
 def: OpR_RR_pat<A2_vcmpbeq,   seteq,          v8i1, V8I8>;
-def: OpR_RR_pat<A4_vcmpbgt,   RevCmp<setlt>,  i1,   V8I8>;
 def: OpR_RR_pat<A4_vcmpbgt,   RevCmp<setlt>,  v8i1, V8I8>;
-def: OpR_RR_pat<A4_vcmpbgt,   setgt,          i1,   V8I8>;
 def: OpR_RR_pat<A4_vcmpbgt,   setgt,          v8i1, V8I8>;
-def: OpR_RR_pat<A2_vcmpbgtu,  RevCmp<setult>, i1,   V8I8>;
 def: OpR_RR_pat<A2_vcmpbgtu,  RevCmp<setult>, v8i1, V8I8>;
-def: OpR_RR_pat<A2_vcmpbgtu,  setugt,         i1,   V8I8>;
 def: OpR_RR_pat<A2_vcmpbgtu,  setugt,         v8i1, V8I8>;
-def: OpR_RR_pat<A2_vcmpheq,   seteq,          i1,   V4I16>;
 def: OpR_RR_pat<A2_vcmpheq,   seteq,          v4i1, V4I16>;
-def: OpR_RR_pat<A2_vcmphgt,   RevCmp<setlt>,  i1,   V4I16>;
 def: OpR_RR_pat<A2_vcmphgt,   RevCmp<setlt>,  v4i1, V4I16>;
-def: OpR_RR_pat<A2_vcmphgt,   setgt,          i1,   V4I16>;
 def: OpR_RR_pat<A2_vcmphgt,   setgt,          v4i1, V4I16>;
-def: OpR_RR_pat<A2_vcmphgtu,  RevCmp<setult>, i1,   V4I16>;
 def: OpR_RR_pat<A2_vcmphgtu,  RevCmp<setult>, v4i1, V4I16>;
-def: OpR_RR_pat<A2_vcmphgtu,  setugt,         i1,   V4I16>;
 def: OpR_RR_pat<A2_vcmphgtu,  setugt,         v4i1, V4I16>;
-def: OpR_RR_pat<A2_vcmpweq,   seteq,          i1,   V2I32>;
 def: OpR_RR_pat<A2_vcmpweq,   seteq,          v2i1, V2I32>;
-def: OpR_RR_pat<A2_vcmpwgt,   RevCmp<setlt>,  i1,   V2I32>;
 def: OpR_RR_pat<A2_vcmpwgt,   RevCmp<setlt>,  v2i1, V2I32>;
-def: OpR_RR_pat<A2_vcmpwgt,   setgt,          i1,   V2I32>;
 def: OpR_RR_pat<A2_vcmpwgt,   setgt,          v2i1, V2I32>;
-def: OpR_RR_pat<A2_vcmpwgtu,  RevCmp<setult>, i1,   V2I32>;
 def: OpR_RR_pat<A2_vcmpwgtu,  RevCmp<setult>, v2i1, V2I32>;
-def: OpR_RR_pat<A2_vcmpwgtu,  setugt,         i1,   V2I32>;
 def: OpR_RR_pat<A2_vcmpwgtu,  setugt,         v2i1, V2I32>;
 
 def: OpR_RR_pat<F2_sfcmpeq,   seteq,          i1, F32>;
@@ -1213,12 +1198,6 @@ def: OpR_RI_pat<S2_asl_i_r,  Shl, i32,   I32,   u5_0ImmPred>;
 def: OpR_RI_pat<S2_asr_i_p,  Sra, i64,   I64,   u6_0ImmPred>;
 def: OpR_RI_pat<S2_lsr_i_p,  Srl, i64,   I64,   u6_0ImmPred>;
 def: OpR_RI_pat<S2_asl_i_p,  Shl, i64,   I64,   u6_0ImmPred>;
-def: OpR_RI_pat<S2_asr_i_vh, Sra, v4i16, V4I16, u4_0ImmPred>;
-def: OpR_RI_pat<S2_lsr_i_vh, Srl, v4i16, V4I16, u4_0ImmPred>;
-def: OpR_RI_pat<S2_asl_i_vh, Shl, v4i16, V4I16, u4_0ImmPred>;
-def: OpR_RI_pat<S2_asr_i_vh, Sra, v2i32, V2I32, u5_0ImmPred>;
-def: OpR_RI_pat<S2_lsr_i_vh, Srl, v2i32, V2I32, u5_0ImmPred>;
-def: OpR_RI_pat<S2_asl_i_vh, Shl, v2i32, V2I32, u5_0ImmPred>;
 
 def: OpR_RR_pat<S2_asr_r_r, Sra, i32, I32, I32>;
 def: OpR_RR_pat<S2_lsr_r_r, Srl, i32, I32, I32>;

``````````

</details>


https://github.com/llvm/llvm-project/pull/162754