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-rw-r--r--llvm/test/Transforms/LoopVectorize/skip-iterations.ll181
1 files changed, 0 insertions, 181 deletions
diff --git a/llvm/test/Transforms/LoopVectorize/skip-iterations.ll b/llvm/test/Transforms/LoopVectorize/skip-iterations.ll
deleted file mode 100644
index 27007aa713b..00000000000
--- a/llvm/test/Transforms/LoopVectorize/skip-iterations.ll
+++ /dev/null
@@ -1,181 +0,0 @@
-; RUN: opt < %s -loop-vectorize -force-vector-width=4 -dce -instcombine -S | FileCheck %s
-
-target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
-
-; tests skipping iterations within a VF through break/continue/gotos.
-
-; The main difficulty in vectorizing these loops in test1,test2 and test3 is
-; safely speculating that the widened load of A[i] should not fault if the
-; scalarized loop does not fault. For example, the
-; original load in the scalar loop may not fault, but the last iteration of the
-; vectorized load can fault (if it crosses a page boudary for example).
-; This last vector iteration is where *one* of the
-; scalar iterations lead to the early exit.
-
-; int test(int *A, int Length) {
-; for (int i = 0; i < Length; i++) {
-; if (A[i] > 10.0) goto end;
-; A[i] = 0;
-; }
-; end:
-; return 0;
-; }
-; CHECK-LABEL: test1(
-; CHECK-NOT: <4 x i32>
-define i32 @test1(i32* nocapture %A, i32 %Length) {
-entry:
- %cmp8 = icmp sgt i32 %Length, 0
- br i1 %cmp8, label %for.body.preheader, label %end
-
-for.body.preheader: ; preds = %entry
- br label %for.body
-
-for.body: ; preds = %for.body.preheader, %if.else
- %indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %0 = load i32, i32* %arrayidx, align 4, !tbaa !15
- %cmp1 = icmp sgt i32 %0, 10
- br i1 %cmp1, label %end.loopexit, label %if.else
-
-if.else: ; preds = %for.body
- store i32 0, i32* %arrayidx, align 4, !tbaa !15
- %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
- %1 = trunc i64 %indvars.iv.next to i32
- %cmp = icmp slt i32 %1, %Length
- br i1 %cmp, label %for.body, label %end.loopexit
-
-end.loopexit: ; preds = %if.else, %for.body
- br label %end
-
-end: ; preds = %end.loopexit, %entry
- ret i32 0
-}
-
-; We don't use anything from within the loop at the early exit path
-; so we do not need to know which iteration caused the early exit path.
-; bool test2(int *A, int Length, int K) {
-; for (int i = 0; i < Length; i++) {
-; if (A[i] == K) return true;
-; }
-; return false;
-; }
-; TODO: Today we do not vectorize this, but we could teach the vectorizer, once
-; the hard part of proving/speculating A[i:VF - 1] loads does not fault is handled by the
-; compiler/hardware.
-
-; CHECK-LABEL: test2(
-; CHECK-NOT: <4 x i32>
-define i32 @test2(i32* nocapture %A, i32 %Length, i32 %K) {
-entry:
- %cmp8 = icmp sgt i32 %Length, 0
- br i1 %cmp8, label %for.body.preheader, label %end
-
-for.body.preheader: ; preds = %entry
- br label %for.body
-
-for.body: ; preds = %for.body.preheader, %if.else
- %indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %ld = load i32, i32* %arrayidx, align 4
- %cmp1 = icmp eq i32 %ld, %K
- br i1 %cmp1, label %end.loopexit, label %if.else
-
-if.else: ; preds = %for.body
- %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
- %trunc = trunc i64 %indvars.iv.next to i32
- %cmp = icmp slt i32 %trunc, %Length
- br i1 %cmp, label %for.body, label %end.loopexit
-
-end.loopexit: ; preds = %if.else, %for.body
- %result.lcssa = phi i32 [ 1, %for.body ], [ 0, %if.else ]
- br label %end
-
-end: ; preds = %end.loopexit, %entry
- %result = phi i32 [ %result.lcssa, %end.loopexit ], [ 0, %entry ]
- ret i32 %result
-}
-
-; We use the IV in the early exit
-; so we need to know which iteration caused the early exit path.
-; int test3(int *A, int Length, int K) {
-; for (int i = 0; i < Length; i++) {
-; if (A[i] == K) return i;
-; }
-; return -1;
-; }
-; TODO: Today we do not vectorize this, but we could teach the vectorizer (once
-; we handle the speculation safety of the widened load).
-; CHECK-LABEL: test3(
-; CHECK-NOT: <4 x i32>
-define i32 @test3(i32* nocapture %A, i32 %Length, i32 %K) {
-entry:
- %cmp8 = icmp sgt i32 %Length, 0
- br i1 %cmp8, label %for.body.preheader, label %end
-
-for.body.preheader: ; preds = %entry
- br label %for.body
-
-for.body: ; preds = %for.body.preheader, %if.else
- %indvars.iv = phi i64 [ %indvars.iv.next, %if.else ], [ 0, %for.body.preheader ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %ld = load i32, i32* %arrayidx, align 4
- %cmp1 = icmp eq i32 %ld, %K
- br i1 %cmp1, label %end.loopexit, label %if.else
-
-if.else: ; preds = %for.body
- %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
- %trunc = trunc i64 %indvars.iv.next to i32
- %cmp = icmp slt i32 %trunc, %Length
- br i1 %cmp, label %for.body, label %end.loopexit
-
-end.loopexit: ; preds = %if.else, %for.body
- %result.lcssa = phi i64 [ %indvars.iv, %for.body ], [ -1, %if.else ]
- %res.trunc = trunc i64 %result.lcssa to i32
- br label %end
-
-end: ; preds = %end.loopexit, %entry
- %result = phi i32 [ %res.trunc, %end.loopexit ], [ -1, %entry ]
- ret i32 %result
-}
-
-; bool test4(int *A, int Length, int K, int J) {
-; for (int i = 0; i < Length; i++) {
-; if (A[i] == K) continue;
-; A[i] = J;
-; }
-; }
-; For this test, we vectorize and generate predicated stores to A[i].
-; CHECK-LABEL: test4(
-; CHECK: <4 x i32>
-define void @test4(i32* nocapture %A, i32 %Length, i32 %K, i32 %J) {
-entry:
- %cmp8 = icmp sgt i32 %Length, 0
- br i1 %cmp8, label %for.body.preheader, label %end.loopexit
-
-for.body.preheader: ; preds = %entry
- br label %for.body
-
-for.body: ; preds = %for.body.preheader, %if.else
- %indvars.iv = phi i64 [ %indvars.iv.next, %latch ], [ 0, %for.body.preheader ]
- %arrayidx = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
- %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
- %trunc = trunc i64 %indvars.iv.next to i32
- %ld = load i32, i32* %arrayidx, align 4
- %cmp1 = icmp eq i32 %ld, %K
- br i1 %cmp1, label %latch, label %if.else
-
-if.else:
- store i32 %J, i32* %arrayidx, align 4
- br label %latch
-
-latch: ; preds = %for.body
- %cmp = icmp slt i32 %trunc, %Length
- br i1 %cmp, label %for.body, label %end.loopexit
-
-end.loopexit: ; preds = %if.else, %for.body
- ret void
-}
-!15 = !{!16, !16, i64 0}
-!16 = !{!"int", !17, i64 0}
-!17 = !{!"omnipotent char", !18, i64 0}
-!18 = !{!"Simple C/C++ TBAA"}
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