mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-09-02 11:30:10 +00:00
into an inner loop, as the new loop iteration may differ substantially. This fixes PR8078. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@113057 91177308-0d34-0410-b5e6-96231b3b80d8
51 lines
1.7 KiB
LLVM
51 lines
1.7 KiB
LLVM
; RUN: opt -S < %s -indvars | opt -analyze -iv-users | grep {%cmp = icmp slt i32} | grep {= \{%\\.ph,+,1\}<%for.cond>}
|
|
; PR8079
|
|
|
|
; LoopSimplify should invalidate indvars when splitting out the
|
|
; inner loop.
|
|
|
|
@maxStat = external global i32
|
|
|
|
define i32 @test() nounwind {
|
|
entry:
|
|
br label %for.cond
|
|
|
|
for.cond: ; preds = %if.then5, %if.end, %entry
|
|
%cuts.1 = phi i32 [ 0, %entry ], [ %inc, %if.then5 ], [ %cuts.1, %if.end ]
|
|
%0 = phi i32 [ 0, %entry ], [ %add, %if.end ], [ %add, %if.then5 ]
|
|
%add = add i32 %0, 1
|
|
%cmp = icmp slt i32 %0, 1
|
|
%tmp1 = load i32* @maxStat, align 4
|
|
br i1 %cmp, label %for.body, label %for.cond14.preheader
|
|
|
|
for.cond14.preheader: ; preds = %for.cond
|
|
%cmp1726 = icmp sgt i32 %tmp1, 0
|
|
br i1 %cmp1726, label %for.body18, label %return
|
|
|
|
for.body: ; preds = %for.cond
|
|
%cmp2 = icmp sgt i32 %tmp1, 100
|
|
br i1 %cmp2, label %return, label %if.end
|
|
|
|
if.end: ; preds = %for.body
|
|
%cmp4 = icmp sgt i32 %tmp1, -1
|
|
br i1 %cmp4, label %if.then5, label %for.cond
|
|
|
|
if.then5: ; preds = %if.end
|
|
call void @foo() nounwind
|
|
%inc = add i32 %cuts.1, 1
|
|
br label %for.cond
|
|
|
|
for.body18: ; preds = %for.body18, %for.cond14.preheader
|
|
%i13.027 = phi i32 [ %1, %for.body18 ], [ 0, %for.cond14.preheader ]
|
|
call void @foo() nounwind
|
|
%1 = add nsw i32 %i13.027, 1
|
|
%tmp16 = load i32* @maxStat, align 4
|
|
%cmp17 = icmp slt i32 %1, %tmp16
|
|
br i1 %cmp17, label %for.body18, label %return
|
|
|
|
return: ; preds = %for.body18, %for.body, %for.cond14.preheader
|
|
ret i32 0
|
|
}
|
|
|
|
declare void @foo() nounwind
|