[IRCE] Re-commit tests cases.

[oota-llvm.git] / test / Transforms / IRCE / only-upper-check.ll

diff --git a/test/Transforms/IRCE/only-upper-check.ll b/test/Transforms/IRCE/only-upper-check.ll
new file mode 100644 (file)
index 0000000..dda3f3f
--- /dev/null
+++ b/test/Transforms/IRCE/only-upper-check.ll
@@ -0,0 +1,37 @@
+; RUN: opt -irce -irce-print-range-checks -irce-print-changed-loops %s -S 2>&1 | FileCheck %s
+
+; CHECK: irce: loop has 1 inductive range checks:
+; CHECK-NEXT:InductiveRangeCheck:
+; CHECK-NEXT:  Kind: RANGE_CHECK_UPPER
+; CHECK-NEXT:  Offset: %offset  Scale: 1  Length:   %len = load i32, i32* %a_len_ptr, !range !0
+; CHECK-NEXT:  Branch:   br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
+; CHECK-NEXT: irce: in function incrementing: constrained Loop at depth 1 containing: %loop<header><exiting>,%in.bounds<latch><exiting>
+
+define void @incrementing(i32 *%arr, i32 *%a_len_ptr, i32 %n, i32 %offset) {
+ entry:
+  %len = load i32, i32* %a_len_ptr, !range !0
+  %first.itr.check = icmp sgt i32 %n, 0
+  br i1 %first.itr.check, label %loop, label %exit
+
+ loop:
+  %idx = phi i32 [ 0, %entry ] , [ %idx.next, %in.bounds ]
+  %idx.next = add i32 %idx, 1
+  %array.idx = add i32 %idx, %offset
+  %abc = icmp slt i32 %array.idx, %len
+  br i1 %abc, label %in.bounds, label %out.of.bounds, !prof !1
+
+ in.bounds:
+  %addr = getelementptr i32, i32* %arr, i32 %array.idx
+  store i32 0, i32* %addr
+  %next = icmp slt i32 %idx.next, %n
+  br i1 %next, label %loop, label %exit
+
+ out.of.bounds:
+  ret void
+
+ exit:
+  ret void
+}
+
+!0 = !{i32 0, i32 2147483647}
+!1 = !{!"branch_weights", i32 64, i32 4}