llvm/test/Analysis/DependenceAnalysis/SymbolicSIV.ll
Preston Briggs 3c1cc3888b Modified depends() to recognize that when all levels are "=" and
there's no possible loo-independent dependence, then there's no
dependence.

Updated all test result appropriately.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@168719 91177308-0d34-0410-b5e6-96231b3b80d8
2012-11-27 19:12:26 +00:00

424 lines
14 KiB
LLVM

; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
; ModuleID = 'SymbolicSIV.bc'
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.6.0"
;; for (long int i = 0; i < n; i++) {
;; A[2*i + n] = i;
;; *B++ = A[3*i + 3*n];
define void @symbolicsiv0(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = shl nsw i64 %i.03, 1
%add = add i64 %mul, %n
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%mul14 = add i64 %i.03, %n
%add3 = mul i64 %mul14, 3
%arrayidx4 = getelementptr inbounds i32* %A, i64 %add3
%0 = load i32* %arrayidx4, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[2*i + 5*n] = i;
;; *B++ = A[3*i + 2*n];
define void @symbolicsiv1(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = shl nsw i64 %i.03, 1
%mul1 = mul i64 %n, 5
%add = add i64 %mul, %mul1
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%mul2 = mul nsw i64 %i.03, 3
%mul3 = shl i64 %n, 1
%add4 = add i64 %mul2, %mul3
%arrayidx5 = getelementptr inbounds i32* %A, i64 %add4
%0 = load i32* %arrayidx5, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[2*i - n] = i;
;; *B++ = A[-i + 2*n];
define void @symbolicsiv2(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = shl nsw i64 %i.03, 1
%sub = sub i64 %mul, %n
%arrayidx = getelementptr inbounds i32* %A, i64 %sub
store i32 %conv, i32* %arrayidx, align 4
%mul2 = shl i64 %n, 1
%add = sub i64 %mul2, %i.03
%arrayidx3 = getelementptr inbounds i32* %A, i64 %add
%0 = load i32* %arrayidx3, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[-2*i + n + 1] = i;
;; *B++ = A[i - 2*n];
define void @symbolicsiv3(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = mul nsw i64 %i.03, -2
%add = add i64 %mul, %n
%add1 = add i64 %add, 1
%arrayidx = getelementptr inbounds i32* %A, i64 %add1
store i32 %conv, i32* %arrayidx, align 4
%mul2 = shl i64 %n, 1
%sub = sub i64 %i.03, %mul2
%arrayidx3 = getelementptr inbounds i32* %A, i64 %sub
%0 = load i32* %arrayidx3, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[-2*i + 3*n] = i;
;; *B++ = A[-i + n];
define void @symbolicsiv4(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = mul nsw i64 %i.03, -2
%mul1 = mul i64 %n, 3
%add = add i64 %mul, %mul1
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%add2 = sub i64 %n, %i.03
%arrayidx3 = getelementptr inbounds i32* %A, i64 %add2
%0 = load i32* %arrayidx3, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[-2*i - 2*n] = i;
;; *B++ = A[-i - n];
define void @symbolicsiv5(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = mul nsw i64 %i.03, -2
%mul1 = shl i64 %n, 1
%sub = sub i64 %mul, %mul1
%arrayidx = getelementptr inbounds i32* %A, i64 %sub
store i32 %conv, i32* %arrayidx, align 4
%sub2 = sub nsw i64 0, %i.03
%sub3 = sub i64 %sub2, %n
%arrayidx4 = getelementptr inbounds i32* %A, i64 %sub3
%0 = load i32* %arrayidx4, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; why doesn't SCEV package understand that n >= 0?
;; for (long unsigned i = 0; i < n; i++) {
;; A[i + n + 1] = i;
;; *B++ = A[-i];
define void @weaktest(i32* %A, i32* %B, i64 %n) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - flow [*|<] splitable!
; CHECK: da analyze - split level = 1, iteration = ((0 smax (-1 + (-1 * %n))) /u 2)!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%add = add i64 %i.03, %n
%add1 = add i64 %add, 1
%arrayidx = getelementptr inbounds i32* %A, i64 %add1
store i32 %conv, i32* %arrayidx, align 4
%sub = sub i64 0, %i.03
%arrayidx2 = getelementptr inbounds i32* %A, i64 %sub
%0 = load i32* %arrayidx2, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[4*N*i + M] = i;
;; *B++ = A[4*N*i + 3*M + 1];
define void @symbolicsiv6(i32* %A, i32* %B, i64 %n, i64 %N, i64 %M) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = shl i64 %N, 2
%mul1 = mul i64 %mul, %i.03
%add = add i64 %mul1, %M
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%mul2 = shl i64 %N, 2
%mul3 = mul i64 %mul2, %i.03
%mul4 = mul i64 %M, 3
%add5 = add i64 %mul3, %mul4
%add6 = add i64 %add5, 1
%arrayidx7 = getelementptr inbounds i32* %A, i64 %add6
%0 = load i32* %arrayidx7, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}
;; for (long int i = 0; i < n; i++) {
;; A[2*N*i + M] = i;
;; *B++ = A[2*N*i - 3*M + 2];
define void @symbolicsiv7(i32* %A, i32* %B, i64 %n, i64 %N, i64 %M) nounwind uwtable ssp {
entry:
%cmp1 = icmp eq i64 %n, 0
br i1 %cmp1, label %for.end, label %for.body.preheader
; CHECK: da analyze - none!
; CHECK: da analyze - flow [<>]!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - none!
for.body.preheader: ; preds = %entry
br label %for.body
for.body: ; preds = %for.body.preheader, %for.body
%i.03 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body ], [ %B, %for.body.preheader ]
%conv = trunc i64 %i.03 to i32
%mul = shl i64 %N, 1
%mul1 = mul i64 %mul, %i.03
%add = add i64 %mul1, %M
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%mul2 = shl i64 %N, 1
%mul3 = mul i64 %mul2, %i.03
%0 = mul i64 %M, -3
%sub = add i64 %mul3, %0
%add5 = add i64 %sub, 2
%arrayidx6 = getelementptr inbounds i32* %A, i64 %add5
%1 = load i32* %arrayidx6, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %1, i32* %B.addr.02, align 4
%inc = add nsw i64 %i.03, 1
%exitcond = icmp ne i64 %inc, %n
br i1 %exitcond, label %for.body, label %for.end.loopexit
for.end.loopexit: ; preds = %for.body
br label %for.end
for.end: ; preds = %for.end.loopexit, %entry
ret void
}