Temporarily Revert "Add basic loop fusion pass."

As it's causing some bot failures (and per request from kbarton).

This reverts commit r358543/ab70da07286e618016e78247e4a24fcb84077fda.

llvm-svn: 358546

1 files changed, 0 insertions, 93 deletions

diff --git a/llvm/test/Transforms/IRCE/single-access-with-preloop.ll b/llvm/test/Transforms/IRCE/single-access-with-preloop.ll
deleted file mode 100644
index 6f3b0324e39..00000000000
--- a/llvm/test/Transforms/IRCE/single-access-with-preloop.ll
+++ /dev/null
@@ -1,93 +0,0 @@
-; RUN: opt -verify-loop-info -irce -S < %s | FileCheck %s
-; RUN: opt -verify-loop-info -passes='require<branch-prob>,loop(irce)' -S < %s | FileCheck %s
-
-define void @single_access_with_preloop(i32 *%arr, i32 *%a_len_ptr, i32 %n, i32 %offset) {
- entry:
-  %len = load i32, i32* %a_len_ptr, !range !0
-  %first.itr.check = icmp sgt i32 %n, 0
-  br i1 %first.itr.check, label %loop, label %exit
-
- loop:
-  %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
-  %idx.next = add i32 %idx, 1
-  %array.idx = add i32 %idx, %offset
-  %abc.high = icmp slt i32 %array.idx, %len
-  %abc.low = icmp sge i32 %array.idx, 0
-  %abc = and i1 %abc.low, %abc.high
-  br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
-
- in.bounds:
-  %addr = getelementptr i32, i32* %arr, i32 %array.idx
-  store i32 0, i32* %addr
-  %next = icmp slt i32 %idx.next, %n
-  br i1 %next, label %loop, label %exit
-
- out.of.bounds:
-  ret void
-
- exit:
-  ret void
-}
-
-; CHECK-LABEL: @single_access_with_preloop(
-; CHECK: loop.preheader:
-; CHECK: [[check_min_sint_offset:[^ ]+]] = icmp sgt i32 %offset, -2147483647
-; CHECK: [[safe_offset_preloop:[^ ]+]] = select i1 [[check_min_sint_offset]], i32 %offset, i32 -2147483647
-; If Offset was a SINT_MIN, we could have an overflow here. That is why we calculated its safe version.
-; CHECK: [[not_safe_start:[^ ]+]] = add i32 [[safe_offset_preloop]], -1
-; CHECK: [[not_n:[^ ]+]] = sub i32 -1, %n
-; CHECK: [[not_exit_preloop_at_cond_loclamp:[^ ]+]] = icmp sgt i32 [[not_safe_start]], [[not_n]]
-; CHECK: [[not_exit_preloop_at_loclamp:[^ ]+]] = select i1 [[not_exit_preloop_at_cond_loclamp]], i32 [[not_safe_start]], i32 [[not_n]]
-; CHECK: [[exit_preloop_at_loclamp:[^ ]+]] = sub i32 -1, [[not_exit_preloop_at_loclamp]]
-; CHECK: [[exit_preloop_at_cond:[^ ]+]] = icmp sgt i32 [[exit_preloop_at_loclamp]], 0
-; CHECK: [[exit_preloop_at:[^ ]+]] = select i1 [[exit_preloop_at_cond]], i32 [[exit_preloop_at_loclamp]], i32 0
-
-
-; CHECK: [[len_minus_sint_max:[^ ]+]] = add i32 %len, -2147483647
-; CHECK: [[check_len_min_sint_offset:[^ ]+]] = icmp sgt i32 %offset, [[len_minus_sint_max]]
-; CHECK: [[safe_offset_mainloop:[^ ]+]] = select i1 [[check_len_min_sint_offset]], i32 %offset, i32 [[len_minus_sint_max]]
-; CHECK: [[not_safe_start_2:[^ ]+]] = add i32 [[safe_offset_mainloop]], -1
-; If Offset was a SINT_MIN, we could have an overflow here. That is why we calculated its safe version.
-; CHECK: [[not_safe_upper_end:[^ ]+]] = sub i32 [[not_safe_start_2]], %len
-; CHECK: [[not_exit_mainloop_at_cond_loclamp:[^ ]+]] = icmp sgt i32 [[not_safe_upper_end]], [[not_n]]
-; CHECK: [[not_exit_mainloop_at_loclamp:[^ ]+]] = select i1 [[not_exit_mainloop_at_cond_loclamp]], i32 [[not_safe_upper_end]], i32 [[not_n]]
-; CHECK: [[check_offset_mainloop_2:[^ ]+]] = icmp sgt i32 %offset, 0
-; CHECK: [[safe_offset_mainloop_2:[^ ]+]] = select i1 [[check_offset_mainloop_2]], i32 %offset, i32 0
-; CHECK: [[not_safe_lower_end:[^ ]+]] = add i32 [[safe_offset_mainloop_2]], -2147483648
-; CHECK: [[not_exit_mainloop_at_cond_hiclamp:[^ ]+]] = icmp sgt i32 [[not_exit_mainloop_at_loclamp]], [[not_safe_lower_end]]
-; CHECK: [[not_exit_mainloop_at_hiclamp:[^ ]+]] = select i1 [[not_exit_mainloop_at_cond_hiclamp]], i32 [[not_exit_mainloop_at_loclamp]], i32 [[not_safe_lower_end]]
-; CHECK: [[exit_mainloop_at_hiclamp:[^ ]+]] = sub i32 -1, [[not_exit_mainloop_at_hiclamp]]
-; CHECK: [[exit_mainloop_at_cmp:[^ ]+]] = icmp sgt i32 [[exit_mainloop_at_hiclamp]], 0
-; CHECK: [[exit_mainloop_at:[^ ]+]] = select i1 [[exit_mainloop_at_cmp]], i32 [[exit_mainloop_at_hiclamp]], i32 0
-
-; CHECK: mainloop:
-; CHECK: br label %loop
-
-; CHECK: loop:
-; CHECK: %abc.high = icmp slt i32 %array.idx, %len
-; CHECK: %abc.low = icmp sge i32 %array.idx, 0
-; CHECK: %abc = and i1 true, true
-; CHECK: br i1 %abc, label %in.bounds, label %out.of.bounds.loopexit11
-
-; CHECK: in.bounds:
-; CHECK: [[continue_mainloop_cond:[^ ]+]] = icmp slt i32 %idx.next, [[exit_mainloop_at]]
-; CHECK: br i1 [[continue_mainloop_cond]], label %loop, label %main.exit.selector
-
-; CHECK: main.exit.selector:
-; CHECK: [[mainloop_its_left:[^ ]+]] = icmp slt i32 %idx.next.lcssa, %n
-; CHECK: br i1 [[mainloop_its_left]], label %main.pseudo.exit, label %exit.loopexit
-
-; CHECK: in.bounds.preloop:
-; CHECK: [[continue_preloop_cond:[^ ]+]] = icmp slt i32 %idx.next.preloop, [[exit_preloop_at]]
-; CHECK: br i1 [[continue_preloop_cond]], label %loop.preloop, label %preloop.exit.selector
-
-; CHECK: preloop.exit.selector:
-; CHECK: [[preloop_its_left:[^ ]+]] = icmp slt i32 %idx.next.preloop.lcssa, %n
-; CHECK: br i1 [[preloop_its_left]], label %preloop.pseudo.exit, label %exit.loopexit
-
-; CHECK: in.bounds.postloop:
-; CHECK: %next.postloop = icmp slt i32 %idx.next.postloop, %n
-; CHECK: br i1 %next.postloop, label %loop.postloop, label %exit.loopexit
-
-!0 = !{i32 0, i32 2147483647}
-!1 = !{!"branch_weights", i32 64, i32 4}