[PATCH] D105341: [SVE] Fix ShuffleVector cast<FixedVectorType> in truncateToMinimalBitwidths
Dylan Fleming via Phabricator via llvm-commits
llvm-commits at lists.llvm.org
Tue Jul 6 01:52:19 PDT 2021
DylanFleming-arm updated this revision to Diff 356631.
DylanFleming-arm added a comment.
Removed excess LLVMIR from test
Repository:
rG LLVM Github Monorepo
CHANGES SINCE LAST ACTION
https://reviews.llvm.org/D105341/new/
https://reviews.llvm.org/D105341
Files:
llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
llvm/test/Transforms/LoopVectorize/scalable-trunc-min-bitwidth.ll
Index: llvm/test/Transforms/LoopVectorize/scalable-trunc-min-bitwidth.ll
===================================================================
--- /dev/null
+++ llvm/test/Transforms/LoopVectorize/scalable-trunc-min-bitwidth.ll
@@ -0,0 +1,55 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt -S < %s -loop-vectorize -instsimplify -scalable-vectorization=on -force-target-supports-scalable-vectors | FileCheck %s
+
+define void @trunc_minimal_bitwidths_shufflevector (i8* %p, i32 %arg1, i64 %len) {
+; CHECK-LABEL: @trunc_minimal_bitwidths_shufflevector(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: [[TMP0:%.*]] = call i64 @llvm.vscale.i64()
+; CHECK-NEXT: [[TMP1:%.*]] = mul i64 [[TMP0]], 4
+; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[LEN:%.*]], [[TMP1]]
+; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
+; CHECK: vector.ph:
+; CHECK-NEXT: [[TMP2:%.*]] = call i64 @llvm.vscale.i64()
+; CHECK-NEXT: [[TMP3:%.*]] = mul i64 [[TMP2]], 4
+; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i64 [[LEN]], [[TMP3]]
+; CHECK-NEXT: [[N_VEC:%.*]] = sub i64 [[LEN]], [[N_MOD_VF]]
+; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <vscale x 4 x i32> poison, i32 [[ARG1:%.*]], i32 0
+; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <vscale x 4 x i32> [[BROADCAST_SPLATINSERT]], <vscale x 4 x i32> poison, <vscale x 4 x i32> zeroinitializer
+; CHECK-NEXT: br label [[VECTOR_BODY:%.*]]
+; CHECK: vector.body:
+; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
+; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i8, i8* [[P:%.*]], i64 [[INDEX]]
+; CHECK-NEXT: [[TMP5:%.*]] = bitcast i8* [[TMP4]] to <vscale x 4 x i8>*
+; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <vscale x 4 x i8>, <vscale x 4 x i8>* [[TMP5]], align 1
+; CHECK-NEXT: [[TMP6:%.*]] = trunc <vscale x 4 x i32> [[BROADCAST_SPLAT]] to <vscale x 4 x i8>
+; CHECK-NEXT: [[TMP7:%.*]] = xor <vscale x 4 x i8> [[WIDE_LOAD]], [[TMP6]]
+; CHECK-NEXT: [[TMP8:%.*]] = mul <vscale x 4 x i8> [[TMP7]], [[WIDE_LOAD]]
+; CHECK-NEXT: [[TMP9:%.*]] = bitcast i8* [[TMP4]] to <vscale x 4 x i8>*
+; CHECK-NEXT: store <vscale x 4 x i8> [[TMP8]], <vscale x 4 x i8>* [[TMP9]], align 1
+; CHECK-NEXT: [[TMP10:%.*]] = call i64 @llvm.vscale.i64()
+; CHECK-NEXT: [[TMP11:%.*]] = mul i64 [[TMP10]], 4
+; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], [[TMP11]]
+; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
+; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
+entry:
+ br label %for.body
+
+for.body: ; preds = %entry
+ %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
+ %arrayidx = getelementptr inbounds i8, i8* %p, i64 %indvars.iv
+ %0 = load i8, i8* %arrayidx
+ %conv = zext i8 %0 to i32
+ %conv17 = xor i32 %conv, %arg1
+ %mul18 = mul nuw nsw i32 %conv17, %conv
+ %conv19 = trunc i32 %mul18 to i8
+ store i8 %conv19, i8* %arrayidx
+ %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
+ %exitcond = icmp eq i64 %indvars.iv.next, %len
+ br i1 %exitcond, label %for.exit, label %for.body, !llvm.loop !0
+
+for.exit: ; preds = %for.body
+ ret void
+}
+!0 = !{!0, !1, !2}
+!1 = !{!"llvm.loop.vectorize.width", i32 4}
+!2 = !{!"llvm.loop.vectorize.scalable.enable", i1 true}
Index: llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
===================================================================
--- llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
+++ llvm/lib/Transforms/Vectorize/LoopVectorize.cpp
@@ -3995,16 +3995,14 @@
break;
}
} else if (auto *SI = dyn_cast<ShuffleVectorInst>(I)) {
- auto Elements0 = cast<FixedVectorType>(SI->getOperand(0)->getType())
- ->getNumElements();
+ auto Elements0 =
+ cast<VectorType>(SI->getOperand(0)->getType())->getElementCount();
auto *O0 = B.CreateZExtOrTrunc(
- SI->getOperand(0),
- FixedVectorType::get(ScalarTruncatedTy, Elements0));
- auto Elements1 = cast<FixedVectorType>(SI->getOperand(1)->getType())
- ->getNumElements();
+ SI->getOperand(0), VectorType::get(ScalarTruncatedTy, Elements0));
+ auto Elements1 =
+ cast<VectorType>(SI->getOperand(1)->getType())->getElementCount();
auto *O1 = B.CreateZExtOrTrunc(
- SI->getOperand(1),
- FixedVectorType::get(ScalarTruncatedTy, Elements1));
+ SI->getOperand(1), VectorType::get(ScalarTruncatedTy, Elements1));
NewI = B.CreateShuffleVector(O0, O1, SI->getShuffleMask());
} else if (isa<LoadInst>(I) || isa<PHINode>(I)) {
-------------- next part --------------
A non-text attachment was scrubbed...
Name: D105341.356631.patch
Type: text/x-patch
Size: 4885 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20210706/e950b787/attachment.bin>
More information about the llvm-commits
mailing list