[llvm-commits] [llvm] r76880 - in /llvm/trunk/test/Analysis/LoopDependenceAnalysis: alias.ll local-array.ll no-array.ll siv-strong.ll siv-strong1.ll siv-strong2.ll siv-weak-crossing.ll siv-weak-zero.ll ziv.ll ziv1.ll ziv2.ll
Andreas Bolka
a at bolka.at
Thu Jul 23 08:56:57 PDT 2009
Author: abolka
Date: Thu Jul 23 10:56:53 2009
New Revision: 76880
URL: http://llvm.org/viewvc/llvm-project?rev=76880&view=rev
Log:
FileCheck'ize and expand LDA testcases.
Added:
llvm/trunk/test/Analysis/LoopDependenceAnalysis/alias.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-crossing.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv.ll
Removed:
llvm/trunk/test/Analysis/LoopDependenceAnalysis/local-array.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/no-array.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong1.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong2.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv1.ll
llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv2.ll
Added: llvm/trunk/test/Analysis/LoopDependenceAnalysis/alias.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/alias.ll?rev=76880&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/alias.ll (added)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/alias.ll Thu Jul 23 10:56:53 2009
@@ -0,0 +1,44 @@
+; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
+
+; x[5] = x[6] // with x being a pointer passed as argument
+
+define void @f1(i32* nocapture %xptr) nounwind {
+entry:
+ %x.ld.addr = getelementptr i32* %xptr, i64 6
+ %x.st.addr = getelementptr i32* %xptr, i64 5
+ 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: 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
+}
+
+; x[5] = x[6] // with x being an array on the stack
+
+define void @foo(...) nounwind {
+entry:
+ %xptr = alloca [256 x i32], align 4
+ %x.ld.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 6
+ %x.st.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 5
+ 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: 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
+}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/local-array.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/local-array.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/local-array.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/local-array.ll (removed)
@@ -1,24 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 2} %t | count 1
-; RUN: grep {0,1: dependent} %t | count 1
-
-; x[5] = x[6] // with x being an array on the stack
-
-define void @foo(...) nounwind {
-entry:
- %xptr = alloca [256 x i32], align 4
- %x.ld.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 6
- %x.st.addr = getelementptr [256 x i32]* %xptr, i64 0, i64 5
- 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
- %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
-}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/no-array.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/no-array.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/no-array.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/no-array.ll (removed)
@@ -1,23 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 2} %t | count 1
-; RUN: grep {0,1: dependent} %t | count 1
-
-; x[5] = x[6] // with x being a pointer passed as argument
-
-define void @foo(i32* nocapture %xptr) nounwind {
-entry:
- %x.ld.addr = getelementptr i32* %xptr, i64 6
- %x.st.addr = getelementptr i32* %xptr, i64 5
- 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
- %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
-}
Added: llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong.ll?rev=76880&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong.ll (added)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong.ll Thu Jul 23 10:56:53 2009
@@ -0,0 +1,82 @@
+; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
+
+ at x = common global [256 x i32] zeroinitializer, align 4
+ at y = common global [256 x i32] zeroinitializer, align 4
+
+; for (i = 0; i < 256; i++)
+; x[i] = x[i] + y[i]
+
+define void @f1(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %y.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
+ %x.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %x = load i32* %x.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 < 256; i++)
+; x[i+1] = x[i] + y[i]
+
+define void @f2(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
+ %x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %i.next = add i64 %i, 1
+ %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.next
+ %x = load i32* %x.ld.addr ; 0
+ %y = load i32* %y.ld.addr ; 1
+ %r = add i32 %y, %x
+ store i32 %r, i32* %x.st.addr ; 2
+; CHECK: 0,2: dep
+; CHECK: 1,2: ind
+ %exitcond = icmp eq i64 %i.next, 256
+ br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+ ret void
+}
+
+; for (i = 0; i < 10; i++)
+; x[i+20] = x[i] + y[i]
+
+define void @f3(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
+ %x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %i.20 = add i64 %i, 20
+ %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.20
+ %x = load i32* %x.ld.addr ; 0
+ %y = load i32* %y.ld.addr ; 1
+ %r = add i32 %y, %x
+ store i32 %r, i32* %x.st.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
+}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong1.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong1.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong1.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong1.ll (removed)
@@ -1,30 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 3} %t | count 1
-; RUN: grep {0,2: dependent} %t | count 1
-; RUN: grep {1,2: independent} %t | count 1
-
-; for (i = 0; i < 256; i++)
-; x[i] = x[i] + y[i]
-
- at x = common global [256 x i32] zeroinitializer, align 4
- at y = common global [256 x i32] zeroinitializer, align 4
-
-define void @foo(...) nounwind {
-entry:
- br label %for.body
-
-for.body:
- %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
- %y.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
- %x.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
- %x = load i32* %x.addr
- %y = load i32* %y.addr
- %r = add i32 %y, %x
- store i32 %r, i32* %x.addr
- %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
-}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong2.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong2.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-strong2.ll (removed)
@@ -1,31 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 3} %t | count 1
-; RUN: grep {0,2: dependent} %t | count 1
-; RUN: grep {1,2: independent} %t | count 1
-
-; for (i = 0; i < 256; i++)
-; x[i+1] = x[i] + y[i]
-
- at x = common global [256 x i32] zeroinitializer, align 4
- at y = common global [256 x i32] zeroinitializer, align 4
-
-define void @foo(...) nounwind {
-entry:
- br label %for.body
-
-for.body:
- %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
- %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
- %x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
- %i.next = add i64 %i, 1
- %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i.next
- %x = load i32* %x.ld.addr
- %y = load i32* %y.ld.addr
- %r = add i32 %y, %x
- store i32 %r, i32* %x.st.addr
- %exitcond = icmp eq i64 %i.next, 256
- br i1 %exitcond, label %for.end, label %for.body
-
-for.end:
- ret void
-}
Added: llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-crossing.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-crossing.ll?rev=76880&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-crossing.ll (added)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-crossing.ll Thu Jul 23 10:56:53 2009
@@ -0,0 +1,86 @@
+; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
+
+ at x = common global [256 x i32] zeroinitializer, align 4
+ at y = common global [256 x i32] zeroinitializer, align 4
+
+; for (i = 0; i < 256; i++)
+; x[i] = x[256 - i] + y[i]
+
+define void @f1(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %i.256 = sub i64 256, %i
+ %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i.256
+ %x.ld.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %x = load i32* %x.ld.addr ; 0
+ %y = load i32* %y.ld.addr ; 1
+ %r = add i32 %y, %x
+ store i32 %r, i32* %x.st.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
+}
+
+; // the same example, using more realistic IR
+; for (i = 0; i < 256; i++)
+; x[i] = x[256 - i] + y[i]
+
+define void @f2(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %i.256 = sub i64 0, %i
+ %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
+ %x.ld.addr = getelementptr [256 x i32]* @x, i64 1, i64 %i.256
+ %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %x = load i32* %x.ld.addr ; 0
+ %y = load i32* %y.ld.addr ; 1
+ %r = add i32 %y, %x
+ store i32 %r, i32* %x.st.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 < 100; i++)
+; x[i] = x[256 - i] + y[i]
+
+define void @f3(...) nounwind {
+entry:
+ br label %for.body
+
+for.body:
+ %i = phi i64 [ 0, %entry ], [ %i.next, %for.body ]
+ %i.256 = sub i64 0, %i
+ %y.ld.addr = getelementptr [256 x i32]* @y, i64 0, i64 %i
+ %x.ld.addr = getelementptr [256 x i32]* @x, i64 1, i64 %i.256
+ %x.st.addr = getelementptr [256 x i32]* @x, i64 0, i64 %i
+ %x = load i32* %x.ld.addr ; 0
+ %y = load i32* %y.ld.addr ; 1
+ %r = add i32 %y, %x
+ store i32 %r, i32* %x.st.addr ; 2
+; CHECK: 0,2: dep
+; CHECK: 1,2: ind
+ %i.next = add i64 %i, 1
+ %exitcond = icmp eq i64 %i.next, 100
+ br i1 %exitcond, label %for.end, label %for.body
+
+for.end:
+ ret void
+}
Added: llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll?rev=76880&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll (added)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/siv-weak-zero.ll Thu Jul 23 10:56:53 2009
@@ -0,0 +1,56 @@
+; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
+
+ at x = common global [256 x i32] zeroinitializer, align 4
+ at 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
+}
Added: llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv.ll?rev=76880&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv.ll (added)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv.ll Thu Jul 23 10:56:53 2009
@@ -0,0 +1,44 @@
+; RUN: llvm-as < %s | opt -disable-output -analyze -lda | FileCheck %s
+
+ at 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: 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
+}
+
+; 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: 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
+}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv1.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv1.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv1.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv1.ll (removed)
@@ -1,23 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 2} %t | count 1
-; RUN: grep {0,1: dependent} %t | count 1
-
-; x[5] = x[6]
-
- at x = common global [256 x i32] zeroinitializer, align 4
-
-define void @foo(...) 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)
- %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
-}
Removed: llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv2.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv2.ll?rev=76879&view=auto
==============================================================================
--- llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv2.ll (original)
+++ llvm/trunk/test/Analysis/LoopDependenceAnalysis/ziv2.ll (removed)
@@ -1,26 +0,0 @@
-; RUN: llvm-as < %s | opt -disable-output -analyze -lda > %t
-; RUN: grep {instructions: 2} %t | count 1
-; RUN: grep {0,1: dependent} %t | count 1
-
-; x[c] = x[c+1] // with c being a loop-invariant constant
-
- at x = common global [256 x i32] zeroinitializer, align 4
-
-define void @foo(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
- %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
-}
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