mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-02 09:29:24 +00:00
74b0ccc577
after finding the (unique) layout predecessor. Sometimes a block may be listed more than once, and processing it more than once in this loop can lead to inconsistent values for FtTBB/FtFBB, since the AnalyzeBranch method does not clear these values. There's no point in continuing the loop regardless. The testcase for this is reduced from the 2003-05-02-DependentPHI SingleSource test. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@71536 91177308-0d34-0410-b5e6-96231b3b80d8
31 lines
1.1 KiB
LLVM
31 lines
1.1 KiB
LLVM
; RUN: llvm-as < %s | llc -march=arm
|
|
%struct.List = type { %struct.List*, i32 }
|
|
@Node5 = external constant %struct.List ; <%struct.List*> [#uses=1]
|
|
@"\01LC" = external constant [7 x i8] ; <[7 x i8]*> [#uses=1]
|
|
|
|
define i32 @main() nounwind {
|
|
entry:
|
|
br label %bb
|
|
|
|
bb: ; preds = %bb3, %entry
|
|
%CurL.02 = phi %struct.List* [ @Node5, %entry ], [ %2, %bb3 ] ; <%struct.List*> [#uses=1]
|
|
%PrevL.01 = phi %struct.List* [ null, %entry ], [ %CurL.02, %bb3 ] ; <%struct.List*> [#uses=1]
|
|
%0 = icmp eq %struct.List* %PrevL.01, null ; <i1> [#uses=1]
|
|
br i1 %0, label %bb3, label %bb1
|
|
|
|
bb1: ; preds = %bb
|
|
br label %bb3
|
|
|
|
bb3: ; preds = %bb1, %bb
|
|
%iftmp.0.0 = phi i32 [ 0, %bb1 ], [ -1, %bb ] ; <i32> [#uses=1]
|
|
%1 = tail call i32 (i8*, ...)* @printf(i8* getelementptr ([7 x i8]* @"\01LC", i32 0, i32 0), i32 0, i32 %iftmp.0.0) nounwind ; <i32> [#uses=0]
|
|
%2 = load %struct.List** null, align 4 ; <%struct.List*> [#uses=2]
|
|
%phitmp = icmp eq %struct.List* %2, null ; <i1> [#uses=1]
|
|
br i1 %phitmp, label %bb5, label %bb
|
|
|
|
bb5: ; preds = %bb3
|
|
ret i32 0
|
|
}
|
|
|
|
declare i32 @printf(i8* nocapture, ...) nounwind
|