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llvm-project/llvm/test/Analysis/MemorySSA/pr41853.ll

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[EarlyCSE] Verify hash code in regression tests As discussed in D86843, -earlycse-debug-hash should be used in more regression tests to catch inconsistency between the hashing and the equivalence check. Differential Revision: https://reviews.llvm.org/D86863
2020-08-31 07:17:43 +08:00
; RUN: opt -S -memoryssa -loop-simplify -early-cse-memssa -earlycse-debug-hash -verify-memoryssa %s | FileCheck %s
[MemorySSA] LoopSimplify preserves MemorySSA only when flag is flipped. LoopSimplify can preserve MemorySSA after r360270. But the MemorySSA analysis is retrieved and preserved only when the EnableMSSALoopDependency is set to true. Use the same conditional to mark the pass as preserved, otherwise subsequent passes will get an invalid analysis. Resolves PR41853. llvm-svn: 360697
2019-05-15 02:07:18 +08:00
; RUN: opt -S -memoryssa -loop-simplify -early-cse-memssa -enable-mssa-loop-dependency -verify-memoryssa %s | FileCheck %s
; REQUIRES: asserts
target triple = "x86_64-unknown-linux-gnu"
; CHECK-LABEL: @func()
define void @func() {
br i1 undef, label %bb5, label %bb3
bb5: ; preds = %bb5, %0
store i16 undef, i16* undef
br i1 undef, label %bb5, label %bb3
bb3: ; preds = %bb5, %0
ret void
}