forked from OSchip/llvm-project
32 lines
882 B
LLVM
32 lines
882 B
LLVM
; RUN: opt -irce-skip-profitability-checks -S -verify-loop-info -irce < %s | FileCheck %s
|
|
|
|
define void @single_access_no_preloop_no_offset(i32 *%arr, i32 *%a_len_ptr, i32 %n) {
|
|
; CHECK-LABEL: @single_access_no_preloop_no_offset(
|
|
; CHECK: main.exit.selector:
|
|
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
|
|
%abc = icmp slt i32 %idx, %len
|
|
br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
|
|
|
|
in.bounds:
|
|
%addr = getelementptr i32, i32* %arr, i32 %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
|
|
}
|
|
|
|
!0 = !{i32 0, i32 2147483647}
|
|
!1 = !{!"branch_weights", i32 1, i32 64}
|