[llvm] [AMDGPU] Fix canonicalization of truncated values. (PR #83054)

[Matt Arsenault via llvm-commits]

================
@@ -12416,7 +12416,7 @@ SDValue SITargetLowering::performRcpCombine(SDNode *N,
 }
 
 bool SITargetLowering::isCanonicalized(SelectionDAG &DAG, SDValue Op,
-                                       unsigned MaxDepth) const {
+                                       bool &Trunc, unsigned MaxDepth) const {
----------------
arsenm wrote:

If you always introduce a freeze whenever eliding any canonicalize, shouldn't need this special casing of trunc anymore?


https://github.com/llvm/llvm-project/pull/83054