Author: Roman Lebedev Date: 2021-01-02T01:01:18+03:00 New Revision: 657c1e09da9fb5e63b963fe8eeace01e42e7d3ba
URL: https://github.com/llvm/llvm-project/commit/657c1e09da9fb5e63b963fe8eeace01e42e7d3ba DIFF: https://github.com/llvm/llvm-project/commit/657c1e09da9fb5e63b963fe8eeace01e42e7d3ba.diff LOG: [SimplifyCFG] Teach eliminateDeadSwitchCases() to preserve DomTree, part 2 Added: Modified: llvm/lib/Transforms/Utils/SimplifyCFG.cpp llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll Removed: ################################################################################ diff --git a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp index 30e3f0bc174c..37e594dbd1a4 100644 --- a/llvm/lib/Transforms/Utils/SimplifyCFG.cpp +++ b/llvm/lib/Transforms/Utils/SimplifyCFG.cpp @@ -4990,7 +4990,7 @@ static bool eliminateDeadSwitchCases(SwitchInst *SI, DomTreeUpdater *DTU, if (HasDefault && DeadCases.empty() && NumUnknownBits < 64 /* avoid overflow */ && SI->getNumCases() == (1ULL << NumUnknownBits)) { - createUnreachableSwitchDefault(SI, /*DTU=*/nullptr); + createUnreachableSwitchDefault(SI, DTU); return true; } diff --git a/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll b/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll index 2ce04ec85060..975696541799 100644 --- a/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll +++ b/llvm/test/Transforms/SimplifyCFG/switch-dead-default.ll @@ -1,5 +1,6 @@ ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py -; RUN: opt %s -S -passes='simplify-cfg<switch-to-lookup>' | FileCheck %s +; RUN: opt %s -S -passes='simplify-cfg<switch-to-lookup>' -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s + target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" declare void @foo(i32) _______________________________________________ llvm-branch-commits mailing list llvm-branch-commits@lists.llvm.org https://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-branch-commits
