vendor/llvm/llvm-trunk-r375505vendor/llvm

1 files changed, 17 insertions, 5 deletions

diff --git a/include/llvm/Analysis/ScalarEvolutionExpander.h b/include/llvm/Analysis/ScalarEvolutionExpander.h
index a519f93216b3..b4d727449fbe 100644
--- a/include/llvm/Analysis/ScalarEvolutionExpander.h
+++ b/include/llvm/Analysis/ScalarEvolutionExpander.h
@@ -77,9 +77,13 @@ namespace llvm {
     /// Phis that complete an IV chain. Reuse
     DenseSet<AssertingVH<PHINode>> ChainedPhis;
 
-    /// When true, expressions are expanded in "canonical" form. In particular,
-    /// addrecs are expanded as arithmetic based on a canonical induction
-    /// variable. When false, expression are expanded in a more literal form.
+    /// When true, SCEVExpander tries to expand expressions in "canonical" form.
+    /// When false, expressions are expanded in a more literal form.
+    ///
+    /// In "canonical" form addrecs are expanded as arithmetic based on a
+    /// canonical induction variable. Note that CanonicalMode doesn't guarantee
+    /// that all expressions are expanded in "canonical" form. For some
+    /// expressions literal mode can be preferred.
     bool CanonicalMode;
 
     /// When invoked from LSR, the expander is in "strength reduction" mode. The
@@ -275,8 +279,16 @@ namespace llvm {
 
     /// Clear the current insertion point. This is useful if the instruction
     /// that had been serving as the insertion point may have been deleted.
-    void clearInsertPoint() {
-      Builder.ClearInsertionPoint();
+    void clearInsertPoint() { Builder.ClearInsertionPoint(); }
+
+    /// Set location information used by debugging information.
+    void SetCurrentDebugLocation(DebugLoc L) {
+      Builder.SetCurrentDebugLocation(std::move(L));
+    }
+
+    /// Get location information used by debugging information.
+    const DebugLoc &getCurrentDebugLocation() const {
+      return Builder.getCurrentDebugLocation();
     }
 
     /// Return true if the specified instruction was inserted by the code