2014-02-21 18:15:18 +00:00
|
|
|
; RUN: opt < %s -analyze -basicaa -da -da-delinearize=false | FileCheck %s
|
|
|
|
|
; RUN: opt < %s -analyze -basicaa -da -da-delinearize | FileCheck %s -check-prefix=DELIN
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
; ModuleID = 'GCD.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 < 100; i++)
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[2*i - 4*j] = i;
|
|
|
|
|
;; *B++ = A[6*i + 8*j];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd0(i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd0'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - flow [=> *|<]!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd0'
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - output [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - flow [=> *|<]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - input [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc8
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc8 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc9, %for.inc8 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = shl nsw i64 %i.03, 1
|
|
|
|
|
%mul4 = shl nsw i64 %j.02, 2
|
|
|
|
|
%sub = sub nsw i64 %mul, %mul4
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %sub
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul5 = mul nsw i64 %i.03, 6
|
|
|
|
|
%mul6 = shl nsw i64 %j.02, 3
|
|
|
|
|
%add = add nsw i64 %mul5, %mul6
|
|
|
|
|
%arrayidx7 = getelementptr inbounds i32* %A, i64 %add
|
|
|
|
|
%0 = load i32* %arrayidx7, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc8
|
|
|
|
|
|
|
|
|
|
for.inc8: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc9 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond5 = icmp ne i64 %inc9, 100
|
|
|
|
|
br i1 %exitcond5, label %for.cond1.preheader, label %for.end10
|
|
|
|
|
|
|
|
|
|
for.end10: ; preds = %for.inc8
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;; for (long int i = 0; i < 100; i++)
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[2*i - 4*j] = i;
|
|
|
|
|
;; *B++ = A[6*i + 8*j + 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd1(i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd1'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - none!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd1'
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - output [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
; DELIN: da analyze - confused!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - input [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc9
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc9 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc10, %for.inc9 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = shl nsw i64 %i.03, 1
|
|
|
|
|
%mul4 = shl nsw i64 %j.02, 2
|
|
|
|
|
%sub = sub nsw i64 %mul, %mul4
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %sub
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul5 = mul nsw i64 %i.03, 6
|
|
|
|
|
%mul6 = shl nsw i64 %j.02, 3
|
|
|
|
|
%add = add nsw i64 %mul5, %mul6
|
|
|
|
|
%add7 = or i64 %add, 1
|
|
|
|
|
%arrayidx8 = getelementptr inbounds i32* %A, i64 %add7
|
|
|
|
|
%0 = load i32* %arrayidx8, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc9
|
|
|
|
|
|
|
|
|
|
for.inc9: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc10 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond5 = icmp ne i64 %inc10, 100
|
|
|
|
|
br i1 %exitcond5, label %for.cond1.preheader, label %for.end11
|
|
|
|
|
|
|
|
|
|
for.end11: ; preds = %for.inc9
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;; for (long int i = 0; i < 100; i++)
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[2*i - 4*j + 1] = i;
|
|
|
|
|
;; *B++ = A[6*i + 8*j];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd2(i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd2'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - none!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd2'
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - output [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
; DELIN: da analyze - confused!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - input [* *]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc9
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc9 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc10, %for.inc9 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = shl nsw i64 %i.03, 1
|
|
|
|
|
%mul4 = shl nsw i64 %j.02, 2
|
|
|
|
|
%sub = sub nsw i64 %mul, %mul4
|
|
|
|
|
%add5 = or i64 %sub, 1
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %add5
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul5 = mul nsw i64 %i.03, 6
|
|
|
|
|
%mul6 = shl nsw i64 %j.02, 3
|
|
|
|
|
%add7 = add nsw i64 %mul5, %mul6
|
|
|
|
|
%arrayidx8 = getelementptr inbounds i32* %A, i64 %add7
|
|
|
|
|
%0 = load i32* %arrayidx8, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc9
|
|
|
|
|
|
|
|
|
|
for.inc9: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc10 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond6 = icmp ne i64 %inc10, 100
|
|
|
|
|
br i1 %exitcond6, label %for.cond1.preheader, label %for.end11
|
|
|
|
|
|
|
|
|
|
for.end11: ; preds = %for.inc9
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
;; for (long int i = 0; i < 100; i++)
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[i + 2*j] = i;
|
|
|
|
|
;; *B++ = A[i + 2*j - 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd3(i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd3'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - flow [<> *]!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd3'
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
; DELIN: da analyze - flow [<> *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - input [* *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc7
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc7 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc8, %for.inc7 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = shl nsw i64 %j.02, 1
|
|
|
|
|
%add = add nsw i64 %i.03, %mul
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %add
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul4 = shl nsw i64 %j.02, 1
|
|
|
|
|
%add5 = add nsw i64 %i.03, %mul4
|
|
|
|
|
%sub = add nsw i64 %add5, -1
|
|
|
|
|
%arrayidx6 = getelementptr inbounds i32* %A, i64 %sub
|
|
|
|
|
%0 = load i32* %arrayidx6, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc7
|
|
|
|
|
|
|
|
|
|
for.inc7: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc8 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond5 = icmp ne i64 %inc8, 100
|
|
|
|
|
br i1 %exitcond5, label %for.cond1.preheader, label %for.end9
|
|
|
|
|
|
|
|
|
|
for.end9: ; preds = %for.inc7
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int i = 0; i < 100; i++)
|
|
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[5*i + 10*j*M + 9*M*N] = i;
|
|
|
|
|
;; *B++ = A[15*i + 20*j*M - 21*N*M + 4];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd4(i32* %A, i32* %B, i64 %M, i64 %N) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd4'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - none!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd4'
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - none!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
; DELIN: da analyze - confused!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - none!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc17
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc17 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc18, %for.inc17 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = mul nsw i64 %i.03, 5
|
|
|
|
|
%mul4 = mul nsw i64 %j.02, 10
|
|
|
|
|
%mul5 = mul nsw i64 %mul4, %M
|
|
|
|
|
%add = add nsw i64 %mul, %mul5
|
|
|
|
|
%mul6 = mul nsw i64 %M, 9
|
|
|
|
|
%mul7 = mul nsw i64 %mul6, %N
|
|
|
|
|
%add8 = add nsw i64 %add, %mul7
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %add8
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul9 = mul nsw i64 %i.03, 15
|
|
|
|
|
%mul10 = mul nsw i64 %j.02, 20
|
|
|
|
|
%mul11 = mul nsw i64 %mul10, %M
|
|
|
|
|
%add12 = add nsw i64 %mul9, %mul11
|
|
|
|
|
%mul13 = mul nsw i64 %N, 21
|
|
|
|
|
%mul14 = mul nsw i64 %mul13, %M
|
|
|
|
|
%sub = sub nsw i64 %add12, %mul14
|
|
|
|
|
%add15 = add nsw i64 %sub, 4
|
|
|
|
|
%arrayidx16 = getelementptr inbounds i32* %A, i64 %add15
|
|
|
|
|
%0 = load i32* %arrayidx16, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc17
|
|
|
|
|
|
|
|
|
|
for.inc17: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc18 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond5 = icmp ne i64 %inc18, 100
|
|
|
|
|
br i1 %exitcond5, label %for.cond1.preheader, label %for.end19
|
|
|
|
|
|
|
|
|
|
for.end19: ; preds = %for.inc17
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int i = 0; i < 100; i++)
|
|
|
|
|
;; for (long int j = 0; j < 100; j++) {
|
|
|
|
|
;; A[5*i + 10*j*M + 9*M*N] = i;
|
|
|
|
|
;; *B++ = A[15*i + 20*j*M - 21*N*M + 5];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd5(i32* %A, i32* %B, i64 %M, i64 %N) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd5'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - flow [<> *]!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 19:12:26 +00:00
|
|
|
; CHECK: da analyze - none!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd5'
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - none!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - flow [<> *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - none!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader: ; preds = %entry, %for.inc17
|
|
|
|
|
%B.addr.04 = phi i32* [ %B, %entry ], [ %scevgep, %for.inc17 ]
|
|
|
|
|
%i.03 = phi i64 [ 0, %entry ], [ %inc18, %for.inc17 ]
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.cond1.preheader, %for.body3
|
|
|
|
|
%j.02 = phi i64 [ 0, %for.cond1.preheader ], [ %inc, %for.body3 ]
|
|
|
|
|
%B.addr.11 = phi i32* [ %B.addr.04, %for.cond1.preheader ], [ %incdec.ptr, %for.body3 ]
|
|
|
|
|
%conv = trunc i64 %i.03 to i32
|
|
|
|
|
%mul = mul nsw i64 %i.03, 5
|
|
|
|
|
%mul4 = mul nsw i64 %j.02, 10
|
|
|
|
|
%mul5 = mul nsw i64 %mul4, %M
|
|
|
|
|
%add = add nsw i64 %mul, %mul5
|
|
|
|
|
%mul6 = mul nsw i64 %M, 9
|
|
|
|
|
%mul7 = mul nsw i64 %mul6, %N
|
|
|
|
|
%add8 = add nsw i64 %add, %mul7
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %add8
|
|
|
|
|
store i32 %conv, i32* %arrayidx, align 4
|
|
|
|
|
%mul9 = mul nsw i64 %i.03, 15
|
|
|
|
|
%mul10 = mul nsw i64 %j.02, 20
|
|
|
|
|
%mul11 = mul nsw i64 %mul10, %M
|
|
|
|
|
%add12 = add nsw i64 %mul9, %mul11
|
|
|
|
|
%mul13 = mul nsw i64 %N, 21
|
|
|
|
|
%mul14 = mul nsw i64 %mul13, %M
|
|
|
|
|
%sub = sub nsw i64 %add12, %mul14
|
|
|
|
|
%add15 = add nsw i64 %sub, 5
|
|
|
|
|
%arrayidx16 = getelementptr inbounds i32* %A, i64 %add15
|
|
|
|
|
%0 = load i32* %arrayidx16, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.11, i64 1
|
|
|
|
|
store i32 %0, i32* %B.addr.11, align 4
|
|
|
|
|
%inc = add nsw i64 %j.02, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, 100
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc17
|
|
|
|
|
|
|
|
|
|
for.inc17: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.04, i64 100
|
|
|
|
|
%inc18 = add nsw i64 %i.03, 1
|
|
|
|
|
%exitcond5 = icmp ne i64 %inc18, 100
|
|
|
|
|
br i1 %exitcond5, label %for.cond1.preheader, label %for.end19
|
|
|
|
|
|
|
|
|
|
for.end19: ; preds = %for.inc17
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (long int i = 0; i < n; i++)
|
|
|
|
|
;; for (long int j = 0; j < n; j++) {
|
|
|
|
|
;; A[2*i][4*j] = i;
|
|
|
|
|
;; *B++ = A[8*i][6*j + 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd6(i64 %n, i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%cmp4 = icmp sgt i64 %n, 0
|
|
|
|
|
br i1 %cmp4, label %for.cond1.preheader.preheader, label %for.end12
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd6'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - none!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd6'
|
|
|
|
|
; DELIN: da analyze - none!
|
2014-05-07 18:01:20 +00:00
|
|
|
; DELIN: da analyze - flow [=> =>|<]!
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader.preheader: ; preds = %entry
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
|
|
|
|
for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc10
|
|
|
|
|
%i.06 = phi i64 [ %inc11, %for.inc10 ], [ 0, %for.cond1.preheader.preheader ]
|
|
|
|
|
%B.addr.05 = phi i32* [ %B.addr.1.lcssa, %for.inc10 ], [ %B, %for.cond1.preheader.preheader ]
|
|
|
|
|
%cmp21 = icmp sgt i64 %n, 0
|
|
|
|
|
br i1 %cmp21, label %for.body3.preheader, label %for.inc10
|
|
|
|
|
|
|
|
|
|
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.05, %for.body3.preheader ]
|
|
|
|
|
%conv = trunc i64 %i.06 to i32
|
|
|
|
|
%mul = shl nsw i64 %j.03, 2
|
|
|
|
|
%mul4 = shl nsw i64 %i.06, 1
|
|
|
|
|
%0 = mul nsw i64 %mul4, %n
|
|
|
|
|
%arrayidx.sum = add i64 %0, %mul
|
|
|
|
|
%arrayidx5 = getelementptr inbounds i32* %A, i64 %arrayidx.sum
|
|
|
|
|
store i32 %conv, i32* %arrayidx5, align 4
|
|
|
|
|
%mul6 = mul nsw i64 %j.03, 6
|
|
|
|
|
%add7 = or i64 %mul6, 1
|
|
|
|
|
%mul7 = shl nsw i64 %i.06, 3
|
|
|
|
|
%1 = mul nsw i64 %mul7, %n
|
|
|
|
|
%arrayidx8.sum = add i64 %1, %add7
|
|
|
|
|
%arrayidx9 = getelementptr inbounds i32* %A, i64 %arrayidx8.sum
|
|
|
|
|
%2 = load i32* %arrayidx9, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
|
|
|
|
|
store i32 %2, i32* %B.addr.12, align 4
|
|
|
|
|
%inc = add nsw i64 %j.03, 1
|
|
|
|
|
%exitcond = icmp ne i64 %inc, %n
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc10.loopexit
|
|
|
|
|
|
|
|
|
|
for.inc10.loopexit: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.05, i64 %n
|
|
|
|
|
br label %for.inc10
|
|
|
|
|
|
|
|
|
|
for.inc10: ; preds = %for.inc10.loopexit, %for.cond1.preheader
|
|
|
|
|
%B.addr.1.lcssa = phi i32* [ %B.addr.05, %for.cond1.preheader ], [ %scevgep, %for.inc10.loopexit ]
|
|
|
|
|
%inc11 = add nsw i64 %i.06, 1
|
|
|
|
|
%exitcond8 = icmp ne i64 %inc11, %n
|
|
|
|
|
br i1 %exitcond8, label %for.cond1.preheader, label %for.end12.loopexit
|
|
|
|
|
|
|
|
|
|
for.end12.loopexit: ; preds = %for.inc10
|
|
|
|
|
br label %for.end12
|
|
|
|
|
|
|
|
|
|
for.end12: ; preds = %for.end12.loopexit, %entry
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (int i = 0; i < n; i++)
|
|
|
|
|
;; for (int j = 0; j < n; j++) {
|
|
|
|
|
;; A[2*i][4*j] = i;
|
|
|
|
|
;; *B++ = A[8*i][6*j + 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd7(i32 %n, i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = zext i32 %n to i64
|
|
|
|
|
%cmp4 = icmp sgt i32 %n, 0
|
|
|
|
|
br i1 %cmp4, label %for.cond1.preheader.preheader, label %for.end15
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd7'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - flow [* *|<]!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd7'
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
; DELIN: da analyze - flow [* *|<]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - input [* *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader.preheader: ; preds = %entry
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
|
|
|
|
for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc13
|
|
|
|
|
%indvars.iv8 = phi i64 [ 0, %for.cond1.preheader.preheader ], [ %indvars.iv.next9, %for.inc13 ]
|
|
|
|
|
%B.addr.05 = phi i32* [ %B.addr.1.lcssa, %for.inc13 ], [ %B, %for.cond1.preheader.preheader ]
|
|
|
|
|
%1 = add i32 %n, -1
|
|
|
|
|
%2 = zext i32 %1 to i64
|
|
|
|
|
%3 = add i64 %2, 1
|
|
|
|
|
%cmp21 = icmp sgt i32 %n, 0
|
|
|
|
|
br i1 %cmp21, label %for.body3.preheader, label %for.inc13
|
|
|
|
|
|
|
|
|
|
for.body3.preheader: ; preds = %for.cond1.preheader
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.body3.preheader, %for.body3
|
|
|
|
|
%indvars.iv = phi i64 [ 0, %for.body3.preheader ], [ %indvars.iv.next, %for.body3 ]
|
|
|
|
|
%B.addr.12 = phi i32* [ %incdec.ptr, %for.body3 ], [ %B.addr.05, %for.body3.preheader ]
|
|
|
|
|
%4 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul = shl nsw i32 %4, 2
|
|
|
|
|
%idxprom = sext i32 %mul to i64
|
|
|
|
|
%5 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
%mul4 = shl nsw i32 %5, 1
|
|
|
|
|
%idxprom5 = sext i32 %mul4 to i64
|
|
|
|
|
%6 = mul nsw i64 %idxprom5, %0
|
|
|
|
|
%arrayidx.sum = add i64 %6, %idxprom
|
|
|
|
|
%arrayidx6 = getelementptr inbounds i32* %A, i64 %arrayidx.sum
|
|
|
|
|
%7 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
store i32 %7, i32* %arrayidx6, align 4
|
|
|
|
|
%8 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul7 = mul nsw i32 %8, 6
|
|
|
|
|
%add7 = or i32 %mul7, 1
|
|
|
|
|
%idxprom8 = sext i32 %add7 to i64
|
|
|
|
|
%9 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
%mul9 = shl nsw i32 %9, 3
|
|
|
|
|
%idxprom10 = sext i32 %mul9 to i64
|
|
|
|
|
%10 = mul nsw i64 %idxprom10, %0
|
|
|
|
|
%arrayidx11.sum = add i64 %10, %idxprom8
|
|
|
|
|
%arrayidx12 = getelementptr inbounds i32* %A, i64 %arrayidx11.sum
|
|
|
|
|
%11 = load i32* %arrayidx12, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
|
|
|
|
|
store i32 %11, i32* %B.addr.12, align 4
|
|
|
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
|
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
|
|
|
%exitcond = icmp ne i32 %lftr.wideiv, %n
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc13.loopexit
|
|
|
|
|
|
|
|
|
|
for.inc13.loopexit: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.05, i64 %3
|
|
|
|
|
br label %for.inc13
|
|
|
|
|
|
|
|
|
|
for.inc13: ; preds = %for.inc13.loopexit, %for.cond1.preheader
|
|
|
|
|
%B.addr.1.lcssa = phi i32* [ %B.addr.05, %for.cond1.preheader ], [ %scevgep, %for.inc13.loopexit ]
|
|
|
|
|
%indvars.iv.next9 = add i64 %indvars.iv8, 1
|
|
|
|
|
%lftr.wideiv10 = trunc i64 %indvars.iv.next9 to i32
|
|
|
|
|
%exitcond11 = icmp ne i32 %lftr.wideiv10, %n
|
|
|
|
|
br i1 %exitcond11, label %for.cond1.preheader, label %for.end15.loopexit
|
|
|
|
|
|
|
|
|
|
for.end15.loopexit: ; preds = %for.inc13
|
|
|
|
|
br label %for.end15
|
|
|
|
|
|
|
|
|
|
for.end15: ; preds = %for.end15.loopexit, %entry
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (int i = 0; i < n; i++)
|
|
|
|
|
;; for (int j = 0; j < n; j++) {
|
|
|
|
|
;; A[n*2*i + 4*j] = i;
|
|
|
|
|
;; *B++ = A[n*8*i + 6*j + 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd8(i32 %n, i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%cmp4 = icmp sgt i32 %n, 0
|
|
|
|
|
br i1 %cmp4, label %for.cond1.preheader.preheader, label %for.end15
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd8'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - none!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd8'
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
; DELIN: da analyze - none!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - input [* *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader.preheader: ; preds = %entry
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
|
|
|
|
for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc13
|
|
|
|
|
%i.06 = phi i32 [ %inc14, %for.inc13 ], [ 0, %for.cond1.preheader.preheader ]
|
|
|
|
|
%B.addr.05 = phi i32* [ %B.addr.1.lcssa, %for.inc13 ], [ %B, %for.cond1.preheader.preheader ]
|
|
|
|
|
%0 = add i32 %n, -1
|
|
|
|
|
%1 = zext i32 %0 to i64
|
|
|
|
|
%2 = add i64 %1, 1
|
|
|
|
|
%cmp21 = icmp sgt i32 %n, 0
|
|
|
|
|
br i1 %cmp21, label %for.body3.preheader, label %for.inc13
|
|
|
|
|
|
|
|
|
|
for.body3.preheader: ; preds = %for.cond1.preheader
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.body3.preheader, %for.body3
|
|
|
|
|
%indvars.iv = phi i64 [ 0, %for.body3.preheader ], [ %indvars.iv.next, %for.body3 ]
|
|
|
|
|
%B.addr.12 = phi i32* [ %incdec.ptr, %for.body3 ], [ %B.addr.05, %for.body3.preheader ]
|
|
|
|
|
%mul = shl nsw i32 %n, 1
|
|
|
|
|
%mul4 = mul nsw i32 %mul, %i.06
|
|
|
|
|
%3 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul5 = shl nsw i32 %3, 2
|
|
|
|
|
%add = add nsw i32 %mul4, %mul5
|
|
|
|
|
%idxprom = sext i32 %add to i64
|
|
|
|
|
%arrayidx = getelementptr inbounds i32* %A, i64 %idxprom
|
|
|
|
|
store i32 %i.06, i32* %arrayidx, align 4
|
|
|
|
|
%mul6 = shl nsw i32 %n, 3
|
|
|
|
|
%mul7 = mul nsw i32 %mul6, %i.06
|
|
|
|
|
%4 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul8 = mul nsw i32 %4, 6
|
|
|
|
|
%add9 = add nsw i32 %mul7, %mul8
|
|
|
|
|
%add10 = or i32 %add9, 1
|
|
|
|
|
%idxprom11 = sext i32 %add10 to i64
|
|
|
|
|
%arrayidx12 = getelementptr inbounds i32* %A, i64 %idxprom11
|
|
|
|
|
%5 = load i32* %arrayidx12, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
|
|
|
|
|
store i32 %5, i32* %B.addr.12, align 4
|
|
|
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
|
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
|
|
|
%exitcond = icmp ne i32 %lftr.wideiv, %n
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc13.loopexit
|
|
|
|
|
|
|
|
|
|
for.inc13.loopexit: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.05, i64 %2
|
|
|
|
|
br label %for.inc13
|
|
|
|
|
|
|
|
|
|
for.inc13: ; preds = %for.inc13.loopexit, %for.cond1.preheader
|
|
|
|
|
%B.addr.1.lcssa = phi i32* [ %B.addr.05, %for.cond1.preheader ], [ %scevgep, %for.inc13.loopexit ]
|
|
|
|
|
%inc14 = add nsw i32 %i.06, 1
|
|
|
|
|
%exitcond7 = icmp ne i32 %inc14, %n
|
|
|
|
|
br i1 %exitcond7, label %for.cond1.preheader, label %for.end15.loopexit
|
|
|
|
|
|
|
|
|
|
for.end15.loopexit: ; preds = %for.inc13
|
|
|
|
|
br label %for.end15
|
|
|
|
|
|
|
|
|
|
for.end15: ; preds = %for.end15.loopexit, %entry
|
|
|
|
|
ret void
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
2012-11-13 12:12:02 +00:00
|
|
|
;; for (unsigned i = 0; i < n; i++)
|
|
|
|
|
;; for (unsigned j = 0; j < n; j++) {
|
|
|
|
|
;; A[2*i][4*j] = i;
|
|
|
|
|
;; *B++ = A[8*i][6*j + 1];
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
|
|
|
|
|
define void @gcd9(i32 %n, i32* %A, i32* %B) nounwind uwtable ssp {
|
|
|
|
|
entry:
|
|
|
|
|
%0 = zext i32 %n to i64
|
|
|
|
|
%cmp4 = icmp eq i32 %n, 0
|
|
|
|
|
br i1 %cmp4, label %for.end15, label %for.cond1.preheader.preheader
|
|
|
|
|
|
2013-11-12 22:47:30 +00:00
|
|
|
; CHECK: 'Dependence Analysis' for function 'gcd9'
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - flow [* *|<]!
|
|
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - input [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
; CHECK: da analyze - confused!
|
2012-11-27 06:41:46 +00:00
|
|
|
; CHECK: da analyze - output [* *]!
|
2012-11-13 12:12:02 +00:00
|
|
|
|
2014-02-21 18:15:18 +00:00
|
|
|
; DELIN: 'Dependence Analysis' for function 'gcd9'
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
; DELIN: da analyze - flow [* *|<]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - input [* *]!
|
|
|
|
|
; DELIN: da analyze - confused!
|
|
|
|
|
; DELIN: da analyze - output [* *]!
|
|
|
|
|
|
dependence analysis
Patch from Preston Briggs <preston.briggs@gmail.com>.
This is an updated version of the dependence-analysis patch, including an MIV
test based on Banerjee's inequalities.
It's a fairly complete implementation of the paper
Practical Dependence Testing
Gina Goff, Ken Kennedy, and Chau-Wen Tseng
PLDI 1991
It cannot yet propagate constraints between coupled RDIV subscripts (discussed
in Section 5.3.2 of the paper).
It's organized as a FunctionPass with a single entry point that supports testing
for dependence between two instructions in a function. If there's no dependence,
it returns null. If there's a dependence, it returns a pointer to a Dependence
which can be queried about details (what kind of dependence, is it loop
independent, direction and distance vector entries, etc). I haven't included
every imaginable feature, but there's a good selection that should be adequate
for supporting many loop transformations. Of course, it can be extended as
necessary.
Included in the patch file are many test cases, commented with C code showing
the loops and array references.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@165708 91177308-0d34-0410-b5e6-96231b3b80d8
2012-10-11 07:32:34 +00:00
|
|
|
for.cond1.preheader.preheader: ; preds = %entry
|
|
|
|
|
br label %for.cond1.preheader
|
|
|
|
|
|
|
|
|
|
for.cond1.preheader: ; preds = %for.cond1.preheader.preheader, %for.inc13
|
|
|
|
|
%indvars.iv8 = phi i64 [ 0, %for.cond1.preheader.preheader ], [ %indvars.iv.next9, %for.inc13 ]
|
|
|
|
|
%B.addr.05 = phi i32* [ %B.addr.1.lcssa, %for.inc13 ], [ %B, %for.cond1.preheader.preheader ]
|
|
|
|
|
%1 = add i32 %n, -1
|
|
|
|
|
%2 = zext i32 %1 to i64
|
|
|
|
|
%3 = add i64 %2, 1
|
|
|
|
|
%cmp21 = icmp eq i32 %n, 0
|
|
|
|
|
br i1 %cmp21, label %for.inc13, label %for.body3.preheader
|
|
|
|
|
|
|
|
|
|
for.body3.preheader: ; preds = %for.cond1.preheader
|
|
|
|
|
br label %for.body3
|
|
|
|
|
|
|
|
|
|
for.body3: ; preds = %for.body3.preheader, %for.body3
|
|
|
|
|
%indvars.iv = phi i64 [ 0, %for.body3.preheader ], [ %indvars.iv.next, %for.body3 ]
|
|
|
|
|
%B.addr.12 = phi i32* [ %incdec.ptr, %for.body3 ], [ %B.addr.05, %for.body3.preheader ]
|
|
|
|
|
%4 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul = shl i32 %4, 2
|
|
|
|
|
%idxprom = zext i32 %mul to i64
|
|
|
|
|
%5 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
%mul4 = shl i32 %5, 1
|
|
|
|
|
%idxprom5 = zext i32 %mul4 to i64
|
|
|
|
|
%6 = mul nsw i64 %idxprom5, %0
|
|
|
|
|
%arrayidx.sum = add i64 %6, %idxprom
|
|
|
|
|
%arrayidx6 = getelementptr inbounds i32* %A, i64 %arrayidx.sum
|
|
|
|
|
%7 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
store i32 %7, i32* %arrayidx6, align 4
|
|
|
|
|
%8 = trunc i64 %indvars.iv to i32
|
|
|
|
|
%mul7 = mul i32 %8, 6
|
|
|
|
|
%add7 = or i32 %mul7, 1
|
|
|
|
|
%idxprom8 = zext i32 %add7 to i64
|
|
|
|
|
%9 = trunc i64 %indvars.iv8 to i32
|
|
|
|
|
%mul9 = shl i32 %9, 3
|
|
|
|
|
%idxprom10 = zext i32 %mul9 to i64
|
|
|
|
|
%10 = mul nsw i64 %idxprom10, %0
|
|
|
|
|
%arrayidx11.sum = add i64 %10, %idxprom8
|
|
|
|
|
%arrayidx12 = getelementptr inbounds i32* %A, i64 %arrayidx11.sum
|
|
|
|
|
%11 = load i32* %arrayidx12, align 4
|
|
|
|
|
%incdec.ptr = getelementptr inbounds i32* %B.addr.12, i64 1
|
|
|
|
|
store i32 %11, i32* %B.addr.12, align 4
|
|
|
|
|
%indvars.iv.next = add i64 %indvars.iv, 1
|
|
|
|
|
%lftr.wideiv = trunc i64 %indvars.iv.next to i32
|
|
|
|
|
%exitcond = icmp ne i32 %lftr.wideiv, %n
|
|
|
|
|
br i1 %exitcond, label %for.body3, label %for.inc13.loopexit
|
|
|
|
|
|
|
|
|
|
for.inc13.loopexit: ; preds = %for.body3
|
|
|
|
|
%scevgep = getelementptr i32* %B.addr.05, i64 %3
|
|
|
|
|
br label %for.inc13
|
|
|
|
|
|
|
|
|
|
for.inc13: ; preds = %for.inc13.loopexit, %for.cond1.preheader
|
|
|
|
|
%B.addr.1.lcssa = phi i32* [ %B.addr.05, %for.cond1.preheader ], [ %scevgep, %for.inc13.loopexit ]
|
|
|
|
|
%indvars.iv.next9 = add i64 %indvars.iv8, 1
|
|
|
|
|
%lftr.wideiv10 = trunc i64 %indvars.iv.next9 to i32
|
|
|
|
|
%exitcond11 = icmp ne i32 %lftr.wideiv10, %n
|
|
|
|
|
br i1 %exitcond11, label %for.cond1.preheader, label %for.end15.loopexit
|
|
|
|
|
|
|
|
|
|
for.end15.loopexit: ; preds = %for.inc13
|
|
|
|
|
br label %for.end15
|
|
|
|
|
|
|
|
|
|
for.end15: ; preds = %for.end15.loopexit, %entry
|
|
|
|
|
ret void
|
|
|
|
|
}
|
