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llvm-mirror/test/Analysis/LoopDependenceAnalysis/ziv.ll
Dan Gohman 6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
2010-10-18 18:04:47 +00:00

64 lines
1.5 KiB
LLVM

; RUN: opt < %s -analyze -basicaa -lda | FileCheck %s
@x = common global [256 x i32] zeroinitializer, align 4
;; x[5] = x[6]
define void @f1(...) nounwind {
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%x = load i32* getelementptr ([256 x i32]* @x, i32 0, i64 6)
store i32 %x, i32* getelementptr ([256 x i32]* @x, i32 0, i64 5)
; CHECK: 0,1: 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
}
;; x[c] = x[c+1] // with c being a loop-invariant constant
define void @f2(i64 %c0) nounwind {
entry:
%c1 = add i64 %c0, 1
%x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %c0
%x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %c1
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%x = load i32* %x.ld.addr
store i32 %x, i32* %x.st.addr
; CHECK: 0,1: 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
}
;; x[6] = x[6]
define void @f3(...) nounwind {
entry:
br label %for.body
for.body:
%i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
%x = load i32* getelementptr ([256 x i32]* @x, i32 0, i64 6)
store i32 %x, i32* getelementptr ([256 x i32]* @x, i32 0, i64 6)
; CHECK: 0,1: dep
%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
}