1 files changed, 61 insertions, 0 deletions
diff --git a/polly/test/Isl/CodeGen/multiple-codegens.ll b/polly/test/Isl/CodeGen/multiple-codegens.ll
new file mode 100644
index 00000000000..b9bfb55e041
--- /dev/null
+++ b/polly/test/Isl/CodeGen/multiple-codegens.ll
@@ -0,0 +1,61 @@
+; RUN: opt %loadPolly -polly-scops -polly-opt-isl -polly-codegen -polly-scops -polly-codegen -S < %s | FileCheck %s
+;
+; llvm.org/PR34441
+; Properly handle multiple -polly-scops/-polly-codegen in the same
+; RegionPassManager. -polly-codegen must not reuse the -polly-ast analysis the
+; was created for the first -polly-scops pass.
+; The current solution is that only the first -polly-codegen is allowed to
+; generate code, the second detects it is re-using an IslAst that belongs to a
+; different ScopInfo.
+;
+; int a, b, c;
+;
+; int main () {
+;  while (a++)
+;    while (b) {
+;        c = 0;
+;        break;
+;      }
+;  return 0;
+; }
+;
+target datalayout = "e-m:w-i64:64-f80:128-n8:16:32:64-S128"
+
+@a = common global i32 0, align 4
+@b = common global i32 0, align 4
+@c = common global i32 0, align 4
+
+; Function Attrs: nounwind uwtable
+define i32 @main() {
+entry:
+  %retval = alloca i32, align 4
+  store i32 0, i32* %retval, align 4
+  %.pre = load i32, i32* @a, align 4
+  br label %while.cond
+
+while.cond:                                       ; preds = %while.end, %entry
+  %0 = phi i32 [ %inc, %while.end ], [ %.pre, %entry ]
+  %inc = add nsw i32 %0, 1
+  store i32 %inc, i32* @a, align 4
+  %tobool = icmp ne i32 %0, 0
+  br i1 %tobool, label %while.body, label %while.end4
+
+while.body:                                       ; preds = %while.cond
+  %1 = load i32, i32* @b, align 4
+  %tobool2 = icmp ne i32 %1, 0
+  br i1 %tobool2, label %while.body3, label %while.end
+
+while.body3:                                      ; preds = %while.body
+  store i32 0, i32* @c, align 4
+  br label %while.end
+
+while.end:                                        ; preds = %while.body3, %while.body
+  br label %while.cond
+
+while.end4:                                       ; preds = %while.cond
+  ret i32 0
+}
+
+
+; CHECK: polly.start:
+; CHECK-NOT: polly.start: