mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-12-30 02:32:08 +00:00
572645cf84
bug fixes, and with improved heuristics for analyzing foreign-loop addrecs. This change also flattens IVUsers, eliminating the stride-oriented groupings, which makes it easier to work with. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@95975 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.6 KiB
LLVM
43 lines
1.6 KiB
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
|
|
; rdar://7382068
|
|
|
|
define void @t(i32 %c) nounwind optsize {
|
|
entry:
|
|
br label %bb6
|
|
|
|
bb1: ; preds = %bb6
|
|
%tmp = icmp eq i32 %c_addr.1, 20 ; <i1> [#uses=1]
|
|
br i1 %tmp, label %bb2, label %bb3
|
|
|
|
bb2: ; preds = %bb1
|
|
%tmp1 = tail call i32 @f20(i32 %c_addr.1) nounwind ; <i32> [#uses=1]
|
|
br label %bb7
|
|
|
|
bb3: ; preds = %bb1
|
|
%tmp2 = icmp slt i32 %c_addr.1, 10 ; <i1> [#uses=1]
|
|
%tmp3 = add nsw i32 %c_addr.1, 1 ; <i32> [#uses=1]
|
|
%tmp4 = add i32 %c_addr.1, -1 ; <i32> [#uses=1]
|
|
%c_addr.1.be = select i1 %tmp2, i32 %tmp3, i32 %tmp4 ; <i32> [#uses=1]
|
|
%indvar.next = add i32 %indvar, 1 ; <i32> [#uses=1]
|
|
; CHECK: add i32 %lsr.iv, -1
|
|
br label %bb6
|
|
|
|
bb6: ; preds = %bb3, %entry
|
|
%indvar = phi i32 [ %indvar.next, %bb3 ], [ 0, %entry ] ; <i32> [#uses=2]
|
|
%c_addr.1 = phi i32 [ %c_addr.1.be, %bb3 ], [ %c, %entry ] ; <i32> [#uses=7]
|
|
%tmp5 = icmp eq i32 %indvar, 9999 ; <i1> [#uses=1]
|
|
; CHECK: icmp eq i32 %lsr.iv, 0
|
|
%tmp6 = icmp eq i32 %c_addr.1, 100 ; <i1> [#uses=1]
|
|
%or.cond = or i1 %tmp5, %tmp6 ; <i1> [#uses=1]
|
|
br i1 %or.cond, label %bb7, label %bb1
|
|
|
|
bb7: ; preds = %bb6, %bb2
|
|
%c_addr.0 = phi i32 [ %tmp1, %bb2 ], [ %c_addr.1, %bb6 ] ; <i32> [#uses=1]
|
|
tail call void @bar(i32 %c_addr.0) nounwind
|
|
ret void
|
|
}
|
|
|
|
declare i32 @f20(i32)
|
|
|
|
declare void @bar(i32)
|