llvm/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll
Dan Gohman f2f6ce65b7 Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@81537 91177308-0d34-0410-b5e6-96231b3b80d8
2009-09-11 18:01:28 +00:00

57 lines
1.4 KiB
LLVM

; RUN: opt < %s -disable-output -analyze -lda | FileCheck %s
@x = common global [256 x i32] zeroinitializer, align 4
@y = common global [256 x i32] zeroinitializer, align 4
;; for (i = 0; i < 256; i++)
;; x[i] = x[42] + y[i]
define void @f1(...) nounwind {
entry:
%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 42
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%x.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
%y.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
%x = load i32* %x.ld.addr ; 0
%y = load i32* %y.addr ; 1
%r = add i32 %y, %x
store i32 %r, i32* %x.addr ; 2
; CHECK: 0,2: dep
; CHECK: 1,2: ind
%i.next = add i64 %i, 1
%exitcond = icmp eq i64 %i.next, 256
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
;; for (i = 0; i < 250; i++)
;; x[i] = x[255] + y[i]
define void @f2(...) nounwind {
entry:
%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 255
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%x.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
%y.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
%x = load i32* %x.ld.addr ; 0
%y = load i32* %y.addr ; 1
%r = add i32 %y, %x
store i32 %r, i32* %x.addr ; 2
; CHECK: 0,2: dep
; CHECK: 1,2: ind
%i.next = add i64 %i, 1
%exitcond = icmp eq i64 %i.next, 250
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}