[llvm] [X86] Support lowering for APX promoted BMI instructions. (PR #77433)

[Simon Pilgrim via llvm-commits]

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@@ -879,30 +879,7 @@ let Predicates = [HasBMI2, HasEGPR, In64BitMode] in {
   defm SHLX64 : bmi_shift<"shlx{q}", GR64, i64mem, "_EVEX">, T8, PD, REX_W, EVEX;
 }
 
-let Predicates = [HasBMI2] in {
-  // Prefer RORX which is non-destructive and doesn't update EFLAGS.
-  let AddedComplexity = 10 in {
-    def : Pat<(rotr GR32:$src, (i8 imm:$shamt)),
-              (RORX32ri GR32:$src, imm:$shamt)>;
-    def : Pat<(rotr GR64:$src, (i8 imm:$shamt)),
-              (RORX64ri GR64:$src, imm:$shamt)>;
-
-    def : Pat<(rotl GR32:$src, (i8 imm:$shamt)),
-              (RORX32ri GR32:$src, (ROT32L2R_imm8 imm:$shamt))>;
-    def : Pat<(rotl GR64:$src, (i8 imm:$shamt)),
-              (RORX64ri GR64:$src, (ROT64L2R_imm8 imm:$shamt))>;
-  }
-
-  def : Pat<(rotr (loadi32 addr:$src), (i8 imm:$shamt)),
-            (RORX32mi addr:$src, imm:$shamt)>;
-  def : Pat<(rotr (loadi64 addr:$src), (i8 imm:$shamt)),
-            (RORX64mi addr:$src, imm:$shamt)>;
-
-  def : Pat<(rotl (loadi32 addr:$src), (i8 imm:$shamt)),
-            (RORX32mi addr:$src, (ROT32L2R_imm8 imm:$shamt))>;
-  def : Pat<(rotl (loadi64 addr:$src), (i8 imm:$shamt)),
-            (RORX64mi addr:$src, (ROT64L2R_imm8 imm:$shamt))>;
-
+multiclass bmi_shift_Pats<SDNode op, string suffix = ""> {
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RKSimon wrote:

`bmi_shift_pats`

https://github.com/llvm/llvm-project/pull/77433