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llvm-6502/test/Analysis/DependenceAnalysis/SymbolicRDIV.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

440 lines
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; RUN: opt < %s -analyze -basicaa -da | FileCheck %s
; ModuleID = 'SymbolicRDIV.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 < n1; i++)
;; A[2*i + n1] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[3*j + 3*n1];
define void @symbolicrdiv0(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond1.preheader, 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.cond1.preheader.loopexit: ; preds = %for.body
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.loopexit, %entry
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.end11, label %for.body4.preheader
for.body4.preheader: ; preds = %for.cond1.preheader
br label %for.body4
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%mul = shl nsw i64 %i.05, 1
%add = add i64 %mul, %n1
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond1.preheader.loopexit
for.body4: ; preds = %for.body4.preheader, %for.body4
%j.03 = phi i64 [ %inc10, %for.body4 ], [ 0, %for.body4.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.body4.preheader ]
%mul56 = add i64 %j.03, %n1
%add7 = mul i64 %mul56, 3
%arrayidx8 = getelementptr inbounds i32* %A, i64 %add7
%0 = load i32* %arrayidx8, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc10 = add nsw i64 %j.03, 1
%exitcond7 = icmp ne i64 %inc10, %n2
br i1 %exitcond7, label %for.body4, label %for.end11.loopexit
for.end11.loopexit: ; preds = %for.body4
br label %for.end11
for.end11: ; preds = %for.end11.loopexit, %for.cond1.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; A[2*i + 5*n2] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[3*j + 2*n2];
define void @symbolicrdiv1(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond2.preheader, 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.cond2.preheader.loopexit: ; preds = %for.body
br label %for.cond2.preheader
for.cond2.preheader: ; preds = %for.cond2.preheader.loopexit, %entry
%cmp31 = icmp eq i64 %n2, 0
br i1 %cmp31, label %for.end12, label %for.body5.preheader
for.body5.preheader: ; preds = %for.cond2.preheader
br label %for.body5
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%mul = shl nsw i64 %i.05, 1
%mul1 = mul i64 %n2, 5
%add = add i64 %mul, %mul1
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond2.preheader.loopexit
for.body5: ; preds = %for.body5.preheader, %for.body5
%j.03 = phi i64 [ %inc11, %for.body5 ], [ 0, %for.body5.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body5 ], [ %B, %for.body5.preheader ]
%mul6 = mul nsw i64 %j.03, 3
%mul7 = shl i64 %n2, 1
%add8 = add i64 %mul6, %mul7
%arrayidx9 = getelementptr inbounds i32* %A, i64 %add8
%0 = load i32* %arrayidx9, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc11 = add nsw i64 %j.03, 1
%exitcond6 = icmp ne i64 %inc11, %n2
br i1 %exitcond6, label %for.body5, label %for.end12.loopexit
for.end12.loopexit: ; preds = %for.body5
br label %for.end12
for.end12: ; preds = %for.end12.loopexit, %for.cond2.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; A[2*i - n2] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[-j + 2*n1];
define void @symbolicrdiv2(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond1.preheader, 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.cond1.preheader.loopexit: ; preds = %for.body
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.loopexit, %entry
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.end10, label %for.body4.preheader
for.body4.preheader: ; preds = %for.cond1.preheader
br label %for.body4
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%mul = shl nsw i64 %i.05, 1
%sub = sub i64 %mul, %n2
%arrayidx = getelementptr inbounds i32* %A, i64 %sub
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond1.preheader.loopexit
for.body4: ; preds = %for.body4.preheader, %for.body4
%j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.body4.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.body4.preheader ]
%mul6 = shl i64 %n1, 1
%add = sub i64 %mul6, %j.03
%arrayidx7 = getelementptr inbounds i32* %A, i64 %add
%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
%inc9 = add nsw i64 %j.03, 1
%exitcond6 = icmp ne i64 %inc9, %n2
br i1 %exitcond6, label %for.body4, label %for.end10.loopexit
for.end10.loopexit: ; preds = %for.body4
br label %for.end10
for.end10: ; preds = %for.end10.loopexit, %for.cond1.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; A[-i + n2] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[j - n1];
define void @symbolicrdiv3(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond1.preheader, 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.cond1.preheader.loopexit: ; preds = %for.body
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.loopexit, %entry
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.end9, label %for.body4.preheader
for.body4.preheader: ; preds = %for.cond1.preheader
br label %for.body4
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%add = sub i64 %n2, %i.05
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond1.preheader.loopexit
for.body4: ; preds = %for.body4.preheader, %for.body4
%j.03 = phi i64 [ %inc8, %for.body4 ], [ 0, %for.body4.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.body4.preheader ]
%sub5 = sub i64 %j.03, %n1
%arrayidx6 = getelementptr inbounds i32* %A, i64 %sub5
%0 = load i32* %arrayidx6, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.02, i64 1
store i32 %0, i32* %B.addr.02, align 4
%inc8 = add nsw i64 %j.03, 1
%exitcond6 = icmp ne i64 %inc8, %n2
br i1 %exitcond6, label %for.body4, label %for.end9.loopexit
for.end9.loopexit: ; preds = %for.body4
br label %for.end9
for.end9: ; preds = %for.end9.loopexit, %for.cond1.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; A[-i + 2*n1] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[-j + n1];
define void @symbolicrdiv4(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond1.preheader, 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.cond1.preheader.loopexit: ; preds = %for.body
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.loopexit, %entry
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.end10, label %for.body4.preheader
for.body4.preheader: ; preds = %for.cond1.preheader
br label %for.body4
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%mul = shl i64 %n1, 1
%add = sub i64 %mul, %i.05
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond1.preheader.loopexit
for.body4: ; preds = %for.body4.preheader, %for.body4
%j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.body4.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.body4.preheader ]
%add6 = sub i64 %n1, %j.03
%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
%inc9 = add nsw i64 %j.03, 1
%exitcond6 = icmp ne i64 %inc9, %n2
br i1 %exitcond6, label %for.body4, label %for.end10.loopexit
for.end10.loopexit: ; preds = %for.body4
br label %for.end10
for.end10: ; preds = %for.end10.loopexit, %for.cond1.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; A[-i + n2] = i;
;; for (long int j = 0; j < n2; j++)
;; *B++ = A[-j + 2*n2];
define void @symbolicrdiv5(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.cond1.preheader, 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.cond1.preheader.loopexit: ; preds = %for.body
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.loopexit, %entry
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.end10, label %for.body4.preheader
for.body4.preheader: ; preds = %for.cond1.preheader
br label %for.body4
for.body: ; preds = %for.body.preheader, %for.body
%i.05 = phi i64 [ %inc, %for.body ], [ 0, %for.body.preheader ]
%conv = trunc i64 %i.05 to i32
%add = sub i64 %n2, %i.05
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%inc = add nsw i64 %i.05, 1
%exitcond = icmp ne i64 %inc, %n1
br i1 %exitcond, label %for.body, label %for.cond1.preheader.loopexit
for.body4: ; preds = %for.body4.preheader, %for.body4
%j.03 = phi i64 [ %inc9, %for.body4 ], [ 0, %for.body4.preheader ]
%B.addr.02 = phi i32* [ %incdec.ptr, %for.body4 ], [ %B, %for.body4.preheader ]
%mul = shl i64 %n2, 1
%add6 = sub i64 %mul, %j.03
%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
%inc9 = add nsw i64 %j.03, 1
%exitcond6 = icmp ne i64 %inc9, %n2
br i1 %exitcond6, label %for.body4, label %for.end10.loopexit
for.end10.loopexit: ; preds = %for.body4
br label %for.end10
for.end10: ; preds = %for.end10.loopexit, %for.cond1.preheader
ret void
}
;; for (long int i = 0; i < n1; i++)
;; for (long int j = 0; j < n2; j++) {
;; A[j -i + n2] = i;
;; *B++ = A[2*n2];
define void @symbolicrdiv6(i32* %A, i32* %B, i64 %n1, i64 %n2) nounwind uwtable ssp {
entry:
%cmp4 = icmp eq i64 %n1, 0
br i1 %cmp4, label %for.end7, label %for.cond1.preheader.preheader
; CHECK: da analyze - output [* *]!
; CHECK: da analyze - none!
; CHECK: da analyze - confused!
; CHECK: da analyze - consistent input [S S]!
; CHECK: da analyze - confused!
; CHECK: da analyze - output [* *]!
for.cond1.preheader.preheader: ; preds = %entry
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc5
%B.addr.06 = phi i32* [ %B.addr.1.lcssa, %for.inc5 ], [ %B, %for.cond1.preheader.preheader ]
%i.05 = phi i64 [ %inc6, %for.inc5 ], [ 0, %for.cond1.preheader.preheader ]
%cmp21 = icmp eq i64 %n2, 0
br i1 %cmp21, label %for.inc5, label %for.body3.preheader
for.body3.preheader: ; preds = %for.cond1.preheader
br label %for.body3
for.body3: ; preds = %for.body3.preheader, %for.body3
%j.03 = phi i64 [ %inc, %for.body3 ], [ 0, %for.body3.preheader ]
%B.addr.12 = phi i32* [ %incdec.ptr, %for.body3 ], [ %B.addr.06, %for.body3.preheader ]
%conv = trunc i64 %i.05 to i32
%sub = sub nsw i64 %j.03, %i.05
%add = add i64 %sub, %n2
%arrayidx = getelementptr inbounds i32* %A, i64 %add
store i32 %conv, i32* %arrayidx, align 4
%mul = shl i64 %n2, 1
%arrayidx4 = getelementptr inbounds i32* %A, i64 %mul
%0 = load i32* %arrayidx4, align 4
%incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
store i32 %0, i32* %B.addr.12, align 4
%inc = add nsw i64 %j.03, 1
%exitcond = icmp ne i64 %inc, %n2
br i1 %exitcond, label %for.body3, label %for.inc5.loopexit
for.inc5.loopexit: ; preds = %for.body3
%scevgep = getelementptr i32* %B.addr.06, i64 %n2
br label %for.inc5
for.inc5: ; preds = %for.inc5.loopexit, %for.cond1.preheader
%B.addr.1.lcssa = phi i32* [ %B.addr.06, %for.cond1.preheader ], [ %scevgep, %for.inc5.loopexit ]
%inc6 = add nsw i64 %i.05, 1
%exitcond7 = icmp ne i64 %inc6, %n1
br i1 %exitcond7, label %for.cond1.preheader, label %for.end7.loopexit
for.end7.loopexit: ; preds = %for.inc5
br label %for.end7
for.end7: ; preds = %for.end7.loopexit, %entry
ret void
}
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