From e4584f6abf9fee2b2501575473e8986e44cac9bb Mon Sep 17 00:00:00 2001
From: Tobias Grosser <grosser@fim.uni-passau.de>
Date: Wed, 20 Mar 2013 20:02:35 +0000
Subject: [PATCH] ScopDetect: Add test cases for non-simple regions

llvm-svn: 177567
---
 .../simple_loop_non_single_entry.ll           | 45 +++++++++++++++++++
 .../ScopDetect/simple_loop_non_single_exit.ll | 36 +++++++++++++++
 .../simple_loop_non_single_exit_2.ll          | 37 +++++++++++++++
 3 files changed, 118 insertions(+)
 create mode 100644 polly/test/ScopDetect/simple_loop_non_single_entry.ll
 create mode 100644 polly/test/ScopDetect/simple_loop_non_single_exit.ll
 create mode 100644 polly/test/ScopDetect/simple_loop_non_single_exit_2.ll

diff --git a/polly/test/ScopDetect/simple_loop_non_single_entry.ll b/polly/test/ScopDetect/simple_loop_non_single_entry.ll
new file mode 100644
index 000000000000..a5c0d28030e8
--- /dev/null
+++ b/polly/test/ScopDetect/simple_loop_non_single_entry.ll
@@ -0,0 +1,45 @@
+; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
+; RUN: opt %loadPolly -polly-region-simplify -polly-detect -analyze < %s | FileCheck %s -check-prefix=CHECK-SIMPLIFY
+
+; void f(long A[], long N) {
+;   long i;
+;
+;  if (true)
+;    goto loop;
+;  else
+;    goto loop;
+;
+; loop:
+;   for (i = 0; i < N; ++i)
+;     A[i] = i;
+; }
+
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @f(i64* %A, i64 %N) nounwind {
+entry:
+  fence seq_cst
+  br i1 true, label %then, label %else
+
+then:
+  br label %for.i
+
+else:
+  br label %for.i
+
+for.i:
+  %indvar = phi i64 [ 0, %then ], [ 0, %else], [ %indvar.next, %for.i ]
+  %scevgep = getelementptr i64* %A, i64 %indvar
+  store i64 %indvar, i64* %scevgep
+  %indvar.next = add nsw i64 %indvar, 1
+  %exitcond = icmp eq i64 %indvar.next, %N
+  br i1 %exitcond, label %return, label %for.i
+
+return:
+  fence seq_cst
+  ret void
+}
+
+; CHECK-NOT: Valid Region for Scop
+; CHECK-SIMPLIFY: Valid Region for Scop: for.i => return
diff --git a/polly/test/ScopDetect/simple_loop_non_single_exit.ll b/polly/test/ScopDetect/simple_loop_non_single_exit.ll
new file mode 100644
index 000000000000..1a1129bd270b
--- /dev/null
+++ b/polly/test/ScopDetect/simple_loop_non_single_exit.ll
@@ -0,0 +1,36 @@
+; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
+; RUN: opt %loadPolly -polly-region-simplify -polly-detect -analyze < %s | FileCheck %s -check-prefix=CHECK-SIMPLIFY
+
+; void f(long A[], long N) {
+;   long i;
+;   if (true)
+;     for (i = 0; i < N; ++i)
+;       A[i] = i;
+; }
+
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @f(i64* %A, i64 %N) nounwind {
+entry:
+  fence seq_cst
+  br label %next
+
+next:
+  br i1 true, label %for.i, label %return
+
+for.i:
+  %indvar = phi i64 [ 0, %next], [ %indvar.next, %for.i ]
+  %scevgep = getelementptr i64* %A, i64 %indvar
+  store i64 %indvar, i64* %scevgep
+  %indvar.next = add nsw i64 %indvar, 1
+  %exitcond = icmp eq i64 %indvar.next, %N
+  br i1 %exitcond, label %return, label %for.i
+
+return:
+  fence seq_cst
+  ret void
+}
+
+; CHECK: Valid Region for Scop: for.i => return
+; CHECK-SIMPLIFY: Valid Region for Scop: next => return
diff --git a/polly/test/ScopDetect/simple_loop_non_single_exit_2.ll b/polly/test/ScopDetect/simple_loop_non_single_exit_2.ll
new file mode 100644
index 000000000000..ea2ba1216107
--- /dev/null
+++ b/polly/test/ScopDetect/simple_loop_non_single_exit_2.ll
@@ -0,0 +1,37 @@
+; RUN: opt %loadPolly -polly-detect -analyze < %s | FileCheck %s
+; RUN: opt %loadPolly -polly-region-simplify -polly-detect -analyze < %s | FileCheck %s -check-prefix=CHECK-SIMPLIFY
+
+; void f(long A[], long N) {
+;   long i;
+;   if (true)
+;     if (true)
+;       for (i = 0; i < N; ++i)
+;         A[i] = i;
+; }
+
+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"
+target triple = "x86_64-unknown-linux-gnu"
+
+define void @f(i64* %A, i64 %N) nounwind {
+entry:
+  fence seq_cst
+  br i1 true, label %next, label %return
+
+next:
+  br i1 true, label %for.i, label %return
+
+for.i:
+  %indvar = phi i64 [ 0, %next], [ %indvar.next, %for.i ]
+  %scevgep = getelementptr i64* %A, i64 %indvar
+  store i64 %indvar, i64* %scevgep
+  %indvar.next = add nsw i64 %indvar, 1
+  %exitcond = icmp eq i64 %indvar.next, %N
+  br i1 %exitcond, label %return, label %for.i
+
+return:
+  fence seq_cst
+  ret void
+}
+
+; CHECK: Valid Region for Scop: for.i => return
+; CHECK-SIMPLIFY: Valid Region for Scop: next => return.single_exit1