1 files changed, 0 insertions, 187 deletions
diff --git a/llvm/test/Transforms/SimpleLoopUnswitch/update-scev.ll b/llvm/test/Transforms/SimpleLoopUnswitch/update-scev.ll
deleted file mode 100644
index 1f4c1421b4e..00000000000
--- a/llvm/test/Transforms/SimpleLoopUnswitch/update-scev.ll
+++ /dev/null
@@ -1,187 +0,0 @@
-; RUN: opt -passes='print<scalar-evolution>,loop(unswitch,loop-instsimplify),print<scalar-evolution>' -enable-nontrivial-unswitch -S < %s 2>%t.scev | FileCheck %s
-; RUN: opt -enable-mssa-loop-dependency=true -verify-memoryssa -passes='print<scalar-evolution>,loop(unswitch,loop-instsimplify),print<scalar-evolution>' -enable-nontrivial-unswitch -S < %s 2>%t.scev | FileCheck %s
-; RUN: FileCheck %s --check-prefix=SCEV < %t.scev
-
-target triple = "x86_64-unknown-linux-gnu"
-
-declare void @f()
-
-; Check that trivially unswitching an inner loop resets both the inner and outer
-; loop trip count.
-define void @test1(i32 %n, i32 %m, i1 %cond) {
-; Check that SCEV has no trip count before unswitching.
-; SCEV-LABEL: Determining loop execution counts for: @test1
-; SCEV: Loop %inner_loop_begin: <multiple exits> Unpredictable backedge-taken count.
-; SCEV: Loop %outer_loop_begin: Unpredictable backedge-taken count.
-;
-; Now check that after unswitching and simplifying instructions we get clean
-; backedge-taken counts.
-; SCEV-LABEL: Determining loop execution counts for: @test1
-; SCEV: Loop %inner_loop_begin: backedge-taken count is (-1 + (1 smax %m))<nsw>
-; SCEV: Loop %outer_loop_begin: backedge-taken count is (-1 + (1 smax %n))<nsw>
-;
-; And verify the code matches what we expect.
-; CHECK-LABEL: define void @test1(
-entry:
-  br label %outer_loop_begin
-; Ensure the outer loop didn't get unswitched.
-; CHECK:       entry:
-; CHECK-NEXT:    br label %outer_loop_begin
-
-outer_loop_begin:
-  %i = phi i32 [ %i.next, %outer_loop_latch ], [ 0, %entry ]
-  ; Block unswitching of the outer loop with a noduplicate call.
-  call void @f() noduplicate
-  br label %inner_loop_begin
-; Ensure the inner loop got unswitched into the outer loop.
-; CHECK:       outer_loop_begin:
-; CHECK-NEXT:    %{{.*}} = phi i32
-; CHECK-NEXT:    call void @f()
-; CHECK-NEXT:    br i1 %cond,
-
-inner_loop_begin:
-  %j = phi i32 [ %j.next, %inner_loop_latch ], [ 0, %outer_loop_begin ]
-  br i1 %cond, label %inner_loop_latch, label %inner_loop_early_exit
-
-inner_loop_latch:
-  %j.next = add nsw i32 %j, 1
-  %j.cmp = icmp slt i32 %j.next, %m
-  br i1 %j.cmp, label %inner_loop_begin, label %inner_loop_late_exit
-
-inner_loop_early_exit:
-  %j.lcssa = phi i32 [ %i, %inner_loop_begin ]
-  br label %outer_loop_latch
-
-inner_loop_late_exit:
-  br label %outer_loop_latch
-
-outer_loop_latch:
-  %i.phi = phi i32 [ %j.lcssa, %inner_loop_early_exit ], [ %i, %inner_loop_late_exit ]
-  %i.next = add nsw i32 %i.phi, 1
-  %i.cmp = icmp slt i32 %i.next, %n
-  br i1 %i.cmp, label %outer_loop_begin, label %exit
-
-exit:
-  ret void
-}
-
-; Check that trivially unswitching an inner loop resets both the inner and outer
-; loop trip count.
-define void @test2(i32 %n, i32 %m, i32 %cond) {
-; Check that SCEV has no trip count before unswitching.
-; SCEV-LABEL: Determining loop execution counts for: @test2
-; SCEV: Loop %inner_loop_begin: <multiple exits> Unpredictable backedge-taken count.
-; SCEV: Loop %outer_loop_begin: Unpredictable backedge-taken count.
-;
-; Now check that after unswitching and simplifying instructions we get clean
-; backedge-taken counts.
-; SCEV-LABEL: Determining loop execution counts for: @test2
-; SCEV: Loop %inner_loop_begin: backedge-taken count is (-1 + (1 smax %m))<nsw>
-; SCEV: Loop %outer_loop_begin: backedge-taken count is (-1 + (1 smax %n))<nsw>
-;
-; CHECK-LABEL: define void @test2(
-entry:
-  br label %outer_loop_begin
-; Ensure the outer loop didn't get unswitched.
-; CHECK:       entry:
-; CHECK-NEXT:    br label %outer_loop_begin
-
-outer_loop_begin:
-  %i = phi i32 [ %i.next, %outer_loop_latch ], [ 0, %entry ]
-  ; Block unswitching of the outer loop with a noduplicate call.
-  call void @f() noduplicate
-  br label %inner_loop_begin
-; Ensure the inner loop got unswitched into the outer loop.
-; CHECK:       outer_loop_begin:
-; CHECK-NEXT:    %{{.*}} = phi i32
-; CHECK-NEXT:    call void @f()
-; CHECK-NEXT:    switch i32 %cond,
-
-inner_loop_begin:
-  %j = phi i32 [ %j.next, %inner_loop_latch ], [ 0, %outer_loop_begin ]
-  switch i32 %cond, label %inner_loop_early_exit [
-    i32 1, label %inner_loop_latch
-    i32 2, label %inner_loop_latch
-  ]
-
-inner_loop_latch:
-  %j.next = add nsw i32 %j, 1
-  %j.cmp = icmp slt i32 %j.next, %m
-  br i1 %j.cmp, label %inner_loop_begin, label %inner_loop_late_exit
-
-inner_loop_early_exit:
-  %j.lcssa = phi i32 [ %i, %inner_loop_begin ]
-  br label %outer_loop_latch
-
-inner_loop_late_exit:
-  br label %outer_loop_latch
-
-outer_loop_latch:
-  %i.phi = phi i32 [ %j.lcssa, %inner_loop_early_exit ], [ %i, %inner_loop_late_exit ]
-  %i.next = add nsw i32 %i.phi, 1
-  %i.cmp = icmp slt i32 %i.next, %n
-  br i1 %i.cmp, label %outer_loop_begin, label %exit
-
-exit:
-  ret void
-}
-
-; Check that non-trivial unswitching of a branch in an inner loop into the outer
-; loop invalidates both inner and outer.
-define void @test3(i32 %n, i32 %m, i1 %cond) {
-; Check that SCEV has no trip count before unswitching.
-; SCEV-LABEL: Determining loop execution counts for: @test3
-; SCEV: Loop %inner_loop_begin: <multiple exits> Unpredictable backedge-taken count.
-; SCEV: Loop %outer_loop_begin: Unpredictable backedge-taken count.
-;
-; Now check that after unswitching and simplifying instructions we get clean
-; backedge-taken counts.
-; SCEV-LABEL: Determining loop execution counts for: @test3
-; SCEV: Loop %inner_loop_begin{{.*}}: backedge-taken count is (-1 + (1 smax %m))<nsw>
-; SCEV: Loop %outer_loop_begin: backedge-taken count is (-1 + (1 smax %n))<nsw>
-;
-; And verify the code matches what we expect.
-; CHECK-LABEL: define void @test3(
-entry:
-  br label %outer_loop_begin
-; Ensure the outer loop didn't get unswitched.
-; CHECK:       entry:
-; CHECK-NEXT:    br label %outer_loop_begin
-
-outer_loop_begin:
-  %i = phi i32 [ %i.next, %outer_loop_latch ], [ 0, %entry ]
-  ; Block unswitching of the outer loop with a noduplicate call.
-  call void @f() noduplicate
-  br label %inner_loop_begin
-; Ensure the inner loop got unswitched into the outer loop.
-; CHECK:       outer_loop_begin:
-; CHECK-NEXT:    %{{.*}} = phi i32
-; CHECK-NEXT:    call void @f()
-; CHECK-NEXT:    br i1 %cond,
-
-inner_loop_begin:
-  %j = phi i32 [ %j.next, %inner_loop_latch ], [ 0, %outer_loop_begin ]
-  %j.tmp = add nsw i32 %j, 1
-  br i1 %cond, label %inner_loop_latch, label %inner_loop_early_exit
-
-inner_loop_latch:
-  %j.next = add nsw i32 %j, 1
-  %j.cmp = icmp slt i32 %j.next, %m
-  br i1 %j.cmp, label %inner_loop_begin, label %inner_loop_late_exit
-
-inner_loop_early_exit:
-  %j.lcssa = phi i32 [ %j.tmp, %inner_loop_begin ]
-  br label %outer_loop_latch
-
-inner_loop_late_exit:
-  br label %outer_loop_latch
-
-outer_loop_latch:
-  %inc.phi = phi i32 [ %j.lcssa, %inner_loop_early_exit ], [ 1, %inner_loop_late_exit ]
-  %i.next = add nsw i32 %i, %inc.phi
-  %i.cmp = icmp slt i32 %i.next, %n
-  br i1 %i.cmp, label %outer_loop_begin, label %exit
-
-exit:
-  ret void
-}