================
@@ -1284,13 +1283,13 @@ bool StructurizeCFG::makeUniformRegion(Region *R,
UniformityInfo &UA) {
/// Run the transformation for each region found
bool StructurizeCFG::run(Region *R, DominatorTree *DT) {
- if (R->isTopLevelRegion())
+ // CallBr and its corresponding blocks must not be modified by this pass.
----------------
ssahasra wrote:
My question was for this comment as well as the actual code change on the
following line. When we see a CallBrInst, we don't structurize that region.
What does that mean? Is it because there is nothing to structurize there? Is it
because all child regions are arranged in this region in a way that does not
require structurizing?
https://github.com/llvm/llvm-project/pull/152161
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