[llvm] 841fffa - [LV] Add test for interleaving multiple iterations with call.
Florian Hahn via llvm-commits
llvm-commits at lists.llvm.org
Sat Apr 30 12:44:14 PDT 2022
Author: Florian Hahn
Date: 2022-04-30T20:43:22+01:00
New Revision: 841fffa7451861066403f579b9790e2ae9be469b
URL: https://github.com/llvm/llvm-project/commit/841fffa7451861066403f579b9790e2ae9be469b
DIFF: https://github.com/llvm/llvm-project/commit/841fffa7451861066403f579b9790e2ae9be469b.diff
LOG: [LV] Add test for interleaving multiple iterations with call.
Added:
llvm/test/Transforms/LoopVectorize/interleave-with-call.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/LoopVectorize/interleave-with-call.ll b/llvm/test/Transforms/LoopVectorize/interleave-with-call.ll
new file mode 100644
index 0000000000000..e92400e6bb543
--- /dev/null
+++ b/llvm/test/Transforms/LoopVectorize/interleave-with-call.ll
@@ -0,0 +1,57 @@
+; REQUIRES: asserts
+
+; RUN: opt -passes=loop-vectorize -force-vector-width=1 -force-vector-interleave=2 -debug -S %s 2>&1 | FileCheck %s
+
+; CHECK: VPlan 'Initial VPlan for VF={1},UF>=1' {
+; CHECK-NEXT: Live-in vp<[[VEC_TC:%.+]]> = vector-trip-count
+; CHECK-EMPTY:
+; CHECK-NEXT: vector.ph:
+; CHECK-NEXT: Successor(s): vector loop
+; CHECK-EMPTY:
+; CHECK-NEXT: <x1> vector loop: {
+; CHECK-NEXT: vector.body:
+; CHECK-NEXT: EMIT vp<[[CAN_IV:%.+]]> = CANONICAL-INDUCTION
+; CHECK-NEXT: vp<[[IV_STEPS:%.]]> = SCALAR-STEPS vp<[[CAN_IV]]>, ir<%start>, ir<1>
+; CHECK-NEXT: WIDEN-CALL ir<%min> = call @llvm.smin.i32(vp<[[IV_STEPS]]>, ir<65535>)
+; CHECK-NEXT: CLONE ir<%arrayidx> = getelementptr ir<%dst>, vp<[[IV_STEPS]]>
+; CHECK-NEXT: CLONE store ir<%min>, ir<%arrayidx>
+; CHECK-NEXT: EMIT vp<[[INC:%.+]]> = VF * UF +(nuw) vp<[[CAN_IV]]>
+; CHECK-NEXT: EMIT branch-on-count vp<[[INC]]> vp<[[VEC_TC]]>
+; CHECK-NEXT: No successors
+; CHECK-NEXT: }
+;
+define void @test(i32 %start, ptr %dst) {
+; CHECK-LABEL: @test(
+; CHECK: vector.body:
+; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %vector.body ]
+; CHECK-NEXT: [[OFFSET_IDX:%.*]] = add i32 %start, [[INDEX]]
+; CHECK-NEXT: [[INDUCTION:%.*]] = add i32 [[OFFSET_IDX]], 0
+; CHECK-NEXT: [[INDUCTION1:%.*]] = add i32 [[OFFSET_IDX]], 1
+; CHECK-NEXT: [[TMP1:%.*]] = call i32 @llvm.smin.i32(i32 [[INDUCTION]], i32 65535)
+; CHECK-NEXT: [[TMP2:%.*]] = call i32 @llvm.smin.i32(i32 [[INDUCTION1]], i32 65535)
+; CHECK-NEXT: [[TMP3:%.*]] = getelementptr inbounds i32, ptr [[DST:%.*]], i32 [[INDUCTION]]
+; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds i32, ptr [[DST]], i32 [[INDUCTION1]]
+; CHECK-NEXT: store i32 [[TMP1]], ptr [[TMP3]], align 8
+; CHECK-NEXT: store i32 [[TMP2]], ptr [[TMP4]], align 8
+; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2
+; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[INDEX_NEXT]], %n.vec
+; CHECK-NEXT: br i1 [[TMP5]], label %middle.block, label %vector.body
+; CHECK: middle.block:
+;
+entry:
+ br label %loop
+
+loop:
+ %iv = phi i32 [ %start, %entry ], [ %iv.next, %loop ]
+ %min = tail call i32 @llvm.smin.i32(i32 %iv, i32 65535)
+ %arrayidx = getelementptr inbounds i32 , ptr %dst, i32 %iv
+ store i32 %min, ptr %arrayidx, align 8
+ %iv.next = add nsw i32 %iv, 1
+ %tobool.not = icmp eq i32 %iv.next, 1000
+ br i1 %tobool.not, label %exit, label %loop
+
+exit:
+ ret void
+}
+
+declare i32 @llvm.smin.i32(i32, i32)
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