mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-01 16:33:37 +01:00
36 lines
754 B
LLVM
36 lines
754 B
LLVM
; RUN: opt < %s -scalar-evolution -analyze | grep {Loop %bb3: backedge-taken count is (-1 + %n)}
|
|
|
|
; We don't want to use a max in the trip count expression in
|
|
; this testcase.
|
|
|
|
define void @foo(i32 %n, i32* %p, i32* %q) nounwind {
|
|
entry:
|
|
icmp sgt i32 %n, 0
|
|
br i1 %0, label %bb, label %return
|
|
|
|
bb:
|
|
load i32* %q, align 4
|
|
icmp eq i32 %1, 0
|
|
br i1 %2, label %return, label %bb3.preheader
|
|
|
|
bb3.preheader:
|
|
br label %bb3
|
|
|
|
bb3:
|
|
%i.0 = phi i32 [ %7, %bb3 ], [ 0, %bb3.preheader ]
|
|
getelementptr i32* %p, i32 %i.0
|
|
load i32* %3, align 4
|
|
add i32 %4, 1
|
|
getelementptr i32* %p, i32 %i.0
|
|
store i32 %5, i32* %6, align 4
|
|
add i32 %i.0, 1
|
|
icmp slt i32 %7, %n
|
|
br i1 %8, label %bb3, label %return.loopexit
|
|
|
|
return.loopexit:
|
|
br label %return
|
|
|
|
return:
|
|
ret void
|
|
}
|