forked from OSchip/llvm-project
40 lines
1.1 KiB
LLVM
40 lines
1.1 KiB
LLVM
; RUN: opt -verify-loop-info -irce-print-changed-loops -irce < %s 2>&1 | FileCheck %s
|
|
|
|
; CHECK-NOT: constrained Loop
|
|
|
|
define void @multiple_access_no_preloop(
|
|
i32* %arr_a, i32* %a_len_ptr, i32* %arr_b, i32* %b_len_ptr, i32 %n) {
|
|
|
|
entry:
|
|
%len.a = load i32, i32* %a_len_ptr, !range !0
|
|
%len.b = load i32, i32* %b_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.b ]
|
|
%idx.next = add i32 %idx, 1
|
|
%abc.a = icmp slt i32 %idx, %len.a
|
|
br i1 %abc.a, label %in.bounds.a, label %out.of.bounds, !prof !1
|
|
|
|
in.bounds.a:
|
|
%addr.a = getelementptr i32, i32* %arr_a, i32 %idx
|
|
store i32 0, i32* %addr.a
|
|
%abc.b = icmp slt i32 %idx, %len.b
|
|
br i1 %abc.b, label %in.bounds.b, label %out.of.bounds, !prof !1
|
|
|
|
in.bounds.b:
|
|
%addr.b = getelementptr i32, i32* %arr_b, i32 %idx
|
|
store i32 -1, i32* %addr.b
|
|
%next = icmp slt i32 %idx.next, %n
|
|
br i1 %next, label %loop, label %exit
|
|
|
|
out.of.bounds:
|
|
ret void
|
|
|
|
exit:
|
|
ret void
|
|
}
|
|
|
|
!0 = !{i32 0, i32 2147483647}
|
|
!1 = !{!"branch_weights", i32 1, i32 1} |