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IRCE: add a test case for r230619.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@230680 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Sanjoy Das 2015-02-26 20:14:32 +00:00
parent c0c2133484
commit 0e93eb80f3
1 changed files with 32 additions and 0 deletions
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32
test/Transforms/IRCE/low-becount.ll Normal file
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; RUN: opt -irce-print-changed-loops -irce -S < %s 2>&1 | FileCheck %s
; CHECK-NOT: constrained Loop
define void @low_profiled_be_count(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
entry:
%len = load 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
%abc = icmp slt i32 %idx, %len
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
in.bounds:
%addr = getelementptr i32* %arr, i32 %idx
store i32 0, i32* %addr
%next = icmp slt i32 %idx.next, %n
br i1 %next, label %loop, label %exit, !prof !2
out.of.bounds:
ret void
exit:
ret void
}
!0 = !{i32 0, i32 2147483647}
!1 = !{!"branch_weights", i32 64, i32 4}
!2 = !{!"branch_weights", i32 4, i32 64}