From: Craig Topper <craig.topper@sifive.com>
Date: Mon, 7 Feb 2022 23:52:13 +0000 (-0800)
Subject: [RISCV] Use splat_vector instead of SplatPat in widening FP instruction patterns... 
X-Git-Tag: upstream/15.0.7~17467
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=2c26cfdef73be39959add636f3f90d836d66bdca;p=platform%2Fupstream%2Fllvm.git

[RISCV] Use splat_vector instead of SplatPat in widening FP instruction patterns. NFCI

We use splat_vector for FP nodes without VL, not SplatPat which handles
splat_vector and integer VMV_V_X_VL.

Reduces isel table size by a few hundred bytes.
---

diff --git a/llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td b/llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
index 54665e7..a5de97d 100644
--- a/llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
+++ b/llvm/lib/Target/RISCV/RISCVInstrInfoVSDPatterns.td
@@ -399,7 +399,7 @@ multiclass VPatWidenBinaryFPSDNode_VV_VF<SDNode op, string instruction_name> {
                  vti.Vti.RegClass:$rs2, vti.Vti.RegClass:$rs1,
                  vti.Vti.AVL, vti.Vti.Log2SEW)>;
     def : Pat<(op (vti.Wti.Vector (fpext_oneuse (vti.Vti.Vector vti.Vti.RegClass:$rs2))),
-                  (vti.Wti.Vector (fpext_oneuse (vti.Vti.Vector (SplatPat vti.Vti.ScalarRegClass:$rs1))))),
+                  (vti.Wti.Vector (fpext_oneuse (vti.Vti.Vector (splat_vector vti.Vti.ScalarRegClass:$rs1))))),
               (!cast<Instruction>(instruction_name#"_V"#vti.Vti.ScalarSuffix#"_"#vti.Vti.LMul.MX)
                  vti.Vti.RegClass:$rs2, vti.Vti.ScalarRegClass:$rs1,
                  vti.Vti.AVL, vti.Vti.Log2SEW)>;
@@ -414,7 +414,7 @@ multiclass VPatWidenBinaryFPSDNode_WV_WF<SDNode op, string instruction_name> {
                  vti.Wti.RegClass:$rs2, vti.Vti.RegClass:$rs1,
                  vti.Vti.AVL, vti.Vti.Log2SEW)>;
     def : Pat<(op (vti.Wti.Vector vti.Wti.RegClass:$rs2),
-                  (vti.Wti.Vector (fpext_oneuse (vti.Vti.Vector (SplatPat vti.Vti.ScalarRegClass:$rs1))))),
+                  (vti.Wti.Vector (fpext_oneuse (vti.Vti.Vector (splat_vector vti.Vti.ScalarRegClass:$rs1))))),
               (!cast<Instruction>(instruction_name#"_W"#vti.Vti.ScalarSuffix#"_"#vti.Vti.LMul.MX)
                  vti.Wti.RegClass:$rs2, vti.Vti.ScalarRegClass:$rs1,
                  vti.Vti.AVL, vti.Vti.Log2SEW)>;