Imported Upstream version 5.18.0.179

Former-commit-id: 67aa10e65b237e1c4537630979ee99ebe1374215
2018-10-25 08:34:57 +00:00
parent d6bde52373
commit 8625704ad8
28485 changed files with 3866843 additions and 50 deletions
--- a/external/llvm/test/Transforms/LCSSA/unreachable-use.ll
+++ b/external/llvm/test/Transforms/LCSSA/unreachable-use.ll
@@ -0,0 +1,29 @@
+; RUN: opt < %s -lcssa -S -verify-loop-info | FileCheck %s
+; PR6546
+
+; LCSSA doesn't need to transform uses in blocks not reachable
+; from the entry block.
+
+; CHECK: %tmp33 = load i1*, i1** %tmp
+
+define fastcc void @dfs() nounwind {
+bb:
+  br label %bb44
+
+bb44:
+  br i1 undef, label %bb7, label %bb45
+
+bb7:
+  %tmp = bitcast i1** undef to i1**
+  br label %bb15
+
+bb15:
+  br label %bb44
+
+bb32:
+  %tmp33 = load i1*, i1** %tmp, align 8
+  br label %bb45
+
+bb45:
+  unreachable
+}