mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-10-31 08:16:47 +00:00
27dead44e0
have preheaders or dedicated exit blocks, as clients may not otherwise need to run LoopSimplify. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@101030 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
687 B
LLVM
30 lines
687 B
LLVM
; RUN: opt -analyze -scalar-evolution < %s | FileCheck %s
|
|
|
|
; This loop has no preheader, multiple backedges, etc., but ScalarEvolution
|
|
; should still be able to analyze it.
|
|
|
|
; CHECK: %i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ]
|
|
; CHECK-NEXT: --> {5,+,1}<%loop>
|
|
|
|
define void @foo(i1 %p, i1 %q, i1 %s, i1 %u) {
|
|
entry:
|
|
br i1 %p, label %loop, label %alt
|
|
|
|
alt:
|
|
br i1 %s, label %loop, label %exit
|
|
|
|
loop:
|
|
%i = phi i64 [ 5, %entry ], [ 5, %alt ], [ %i.next, %loop.a ], [ %i.next, %loop.b ]
|
|
%i.next = add i64 %i, 1
|
|
br i1 %q, label %loop.a, label %loop.b
|
|
|
|
loop.a:
|
|
br label %loop
|
|
|
|
loop.b:
|
|
br i1 %u, label %loop, label %exit
|
|
|
|
exit:
|
|
ret void
|
|
}
|