[PATCH] D101605: [PowerPC] Remove extra swap for extract+vperm on LE

[Qiu Chaofan via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rGf7294ac8093a: [PowerPC] Remove extra swap for extract+vperm on LE (authored by qiucf).

Changed prior to commit:
  https://reviews.llvm.org/D101605?vs=341800&id=343586#toc

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D101605/new/

https://reviews.llvm.org/D101605

Files:
  llvm/lib/Target/PowerPC/PPCInstrVSX.td
  llvm/test/CodeGen/PowerPC/vec_extract_p9.ll


Index: llvm/test/CodeGen/PowerPC/vec_extract_p9.ll
===================================================================
--- llvm/test/CodeGen/PowerPC/vec_extract_p9.ll
+++ llvm/test/CodeGen/PowerPC/vec_extract_p9.ll
@@ -182,10 +182,9 @@
 ; CHECK-LE-NEXT:    addi 3, 3, .LCPI9_0 at toc@l
 ; CHECK-LE-NEXT:    lxvx 36, 0, 3
 ; CHECK-LE-NEXT:    addis 3, 2, .LCPI9_1 at toc@ha
-; CHECK-LE-NEXT:    lfs 1, .LCPI9_1 at toc@l(3)
-; CHECK-LE-NEXT:    vperm 2, 2, 3, 4
-; CHECK-LE-NEXT:    xxswapd 0, 34
-; CHECK-LE-NEXT:    xsadddp 1, 0, 1
+; CHECK-LE-NEXT:    lfs 0, .LCPI9_1 at toc@l(3)
+; CHECK-LE-NEXT:    vperm 2, 3, 2, 4
+; CHECK-LE-NEXT:    xsadddp 1, 34, 0
 ; CHECK-LE-NEXT:    blr
 ;
 ; CHECK-BE-LABEL: test10:
Index: llvm/lib/Target/PowerPC/PPCInstrVSX.td
===================================================================
--- llvm/lib/Target/PowerPC/PPCInstrVSX.td
+++ llvm/lib/Target/PowerPC/PPCInstrVSX.td
@@ -2938,6 +2938,9 @@
                                    (SUBREG_TO_REG (i64 1), $A, sub_64), 0),
                          (SUBREG_TO_REG (i64 1), $A, sub_64)>;
 
+def : Pat<(f64 (extractelt (v2f64 (bitconvert (v16i8
+                 (PPCvperm v16i8:$A, v16i8:$B, v16i8:$C)))), 0)),
+          (f64 (EXTRACT_SUBREG (VPERM $B, $A, $C), sub_64))>;
 def : Pat<(f64 (extractelt v2f64:$S, 0)),
           (f64 (EXTRACT_SUBREG (XXPERMDI $S, $S, 2), sub_64))>;
 def : Pat<(f64 (extractelt v2f64:$S, 1)),


-------------- next part --------------
A non-text attachment was scrubbed...
Name: D101605.343586.patch
Type: text/x-patch
Size: 1400 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210507/f5e65a8a/attachment.bin>