[NFCI][SimplifyCFG] Mark all the SimplifyCFG tests that already don't invalidate DomTree as such

First step after e113317958,
in these tests, DomTree is valid afterwards, so mark them as such,
so that they don't regress.

In further steps, SimplifyCFG transforms shall taught to preserve DomTree,
in as small steps as possible.

llvm/test/Transforms/IndVarSimplify/tripcount_infinite.ll

@@ -1,7 +1,7 @@
 ; These tests have an infinite trip count.  We obviously shouldn't remove the
 ; loops!  :)
 ;
-; RUN: opt < %s -indvars -adce -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -indvars -adce -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ;; test for (i = 1; i != 100; i += 2)
 define i32 @infinite_linear() {

llvm/test/Transforms/JumpThreading/and-and-cond.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg  -S | FileCheck %s
+; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1  -S | FileCheck %s
 
 declare i32 @f1()
 declare i32 @f2()

llvm/test/Transforms/JumpThreading/and-cond.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg  -S | FileCheck %s
+; RUN: opt < %s -jump-threading -mem2reg -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1  -S | FileCheck %s
 
 declare i32 @f1()
 declare i32 @f2()

llvm/test/Transforms/LoopIdiom/scev-invalidation_topmostloop.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -indvars -loop-idiom -verify -loop-simplifycfg -loop-idiom < %s | FileCheck %s
+; RUN: opt -S -indvars -loop-idiom -verify -loop-simplifycfg -simplifycfg-require-and-preserve-domtree=1 -loop-idiom < %s | FileCheck %s
 
 target triple = "x86_64-unknown-linux-gnu"
 

llvm/test/Transforms/LoopUnroll/2012-04-09-unroll-indirectbr.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -S -loop-unroll -simplifycfg | FileCheck %s
+; RUN: opt < %s -S -loop-unroll -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s
 ; PR12513: Loop unrolling breaks with indirect branches.
 ; If loop unrolling attempts to transform this loop, it replaces the
 ; indirectbr successors. SimplifyCFG then considers them to be unreachable.

llvm/test/Transforms/LoopVectorize/AMDGPU/divergent-runtime-check.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 -loop-vectorize -simplifycfg < %s | FileCheck -check-prefixes=GCN %s
+; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 -loop-vectorize -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck -check-prefixes=GCN %s
 ; RUN: opt -S -mtriple=amdgcn-unknown-amdhsa -mcpu=gfx900 -loop-vectorize -pass-remarks-analysis='loop-vectorize' < %s 2>&1 | FileCheck -check-prefixes=REMARK %s
 
 ; GCN-LABEL: @runtime_check_divergent_target(

llvm/test/Transforms/SimplifyCFG/2003-08-05-InvokeCrash.ll

@@ -1,6 +1,6 @@
 ; Do not remove the invoke!
 ;
-; RUN: opt < %s -simplifycfg -disable-output
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -disable-output
 
 define i32 @test() personality i8* bitcast (i32 (...)* @__gxx_personality_v0 to i8*) {
 	%A = invoke i32 @test( )

llvm/test/Transforms/SimplifyCFG/2003-08-17-BranchFold.ll

@@ -1,7 +1,7 @@
 ; This test checks to make sure that 'br X, Dest, Dest' is folded into
 ; 'br Dest'
 
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 declare void @noop()
 

llvm/test/Transforms/SimplifyCFG/2003-08-17-FoldSwitch-dbg.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; CHECK-NOT: switch
         %llvm.dbg.anchor.type = type { i32, i32 }

llvm/test/Transforms/SimplifyCFG/2005-12-03-IncorrectPHIFold.ll

@@ -1,6 +1,6 @@
 ; Make sure this doesn't turn into an infinite loop
 
-; RUN: opt < %s -simplifycfg -instsimplify -simplifycfg | llvm-dis | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -instsimplify -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | llvm-dis | FileCheck %s
 
 %struct.anon = type { i32, i32, i32, i32, [1024 x i8] }
 @_zero_ = external global %struct.anon*		; <%struct.anon**> [#uses=2]

llvm/test/Transforms/SimplifyCFG/2006-10-19-UncondDiv.ll

@@ -1,5 +1,5 @@
 ; PR957
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; CHECK-NOT: select
 

llvm/test/Transforms/SimplifyCFG/2008-01-02-hoist-fp-add.ll

@@ -1,5 +1,5 @@
 ; The phi should not be eliminated in this case, because the divide op could trap.
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
 target triple = "i686-apple-darwin8"

llvm/test/Transforms/SimplifyCFG/AArch64/prefer-fma.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -mtriple=aarch64-linux-gnu -simplifycfg -hoist-common-insts=true -enable-unsafe-fp-math -S >%t
+; RUN: opt < %s -mtriple=aarch64-linux-gnu -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -enable-unsafe-fp-math -S >%t
 ; RUN: FileCheck %s < %t
 ; ModuleID = 't.cc'
 

llvm/test/Transforms/SimplifyCFG/EmptyBlockMerge.ll

@@ -1,6 +1,6 @@
 ; Basic block #2 should not be merged into BB #3!
 ;
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 declare void @foo()
 

llvm/test/Transforms/SimplifyCFG/PhiNoEliminate.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | \
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | \
 ; RUN:   not grep select
 
 ;; The PHI node in this example should not be turned into a select, as we are

llvm/test/Transforms/SimplifyCFG/PowerPC/prefer-fma.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -mtriple=powerpc64le-unknown-linux-gnu -simplifycfg -hoist-common-insts=true -enable-unsafe-fp-math -S | \
+; RUN: opt < %s -mtriple=powerpc64le-unknown-linux-gnu -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -enable-unsafe-fp-math -S | \
 ; RUN: FileCheck %s
 
 ; This case is copied from test/Transforms/SimplifyCFG/AArch64/

llvm/test/Transforms/SimplifyCFG/PowerPC/prefer-load-i32.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -mtriple=powerpc64le-unknown-linux-gnu -simplifycfg -hoist-common-insts=true -S | FileCheck %s
+; RUN: opt < %s -mtriple=powerpc64le-unknown-linux-gnu -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S | FileCheck %s
 
 define float @foo(float* %src, float* %dest, i32 signext %count, i32 signext %cond) {
 ; CHECK-LABEL: @foo(

llvm/test/Transforms/SimplifyCFG/SPARC/switch_to_lookup_table.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S -mtriple=sparc-unknown-unknown | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S -mtriple=sparc-unknown-unknown | FileCheck %s
 
 ; Check that switches are not turned into lookup tables, as this is not
 ; considered profitable on the target.

llvm/test/Transforms/SimplifyCFG/X86/combine-parallel-mem-md.ll

@@ -1,4 +1,4 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 

llvm/test/Transforms/SimplifyCFG/X86/merge-cond-stores-cost.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -simplifycfg -mtriple=x86_64-unknown-unknown < %s -simplifycfg-merge-cond-stores=true -simplifycfg-merge-cond-stores-aggressively=false -phi-node-folding-threshold=2 -S | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -mtriple=x86_64-unknown-unknown < %s -simplifycfg-merge-cond-stores=true -simplifycfg-merge-cond-stores-aggressively=false -phi-node-folding-threshold=2 -S | FileCheck %s
 
 define void @test_costly(i32* %p, i32 %a, i32 %b, i32 %c, i32 %d) {
 ; CHECK-LABEL: @test_costly(

llvm/test/Transforms/SimplifyCFG/assume.ll

@@ -1,4 +1,4 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
 
 define void @test1() {
         call void @llvm.assume(i1 0)

llvm/test/Transforms/SimplifyCFG/attr-noduplicate.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; This test checks that the SimplifyCFG pass won't duplicate a call to a
 ; function marked noduplicate.

llvm/test/Transforms/SimplifyCFG/branch-fold-three.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; s >= t, s != t, s <= t
 define void @foo1(i32 %s, i32 %t) {

llvm/test/Transforms/SimplifyCFG/callbr-destinations.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -disable-output
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -disable-output
 ;
 ; Test that SimplifyCFG does not cause CallBr instructions to have duplicate
 ; destinations, which will cause the verifier to assert.

llvm/test/Transforms/SimplifyCFG/convergent.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -S -simplifycfg < %s | FileCheck %s
+; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 ; RUN: opt -S -passes=simplify-cfg < %s | FileCheck %s
 
 declare void @foo() convergent

llvm/test/Transforms/SimplifyCFG/div-rem-pairs.ll

@@ -1,4 +1,4 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
 
 ; We could hoist the div/rem in these tests because it's safe to do so.
 ; PR31028 - https://bugs.llvm.org/show_bug.cgi?id=31028

llvm/test/Transforms/SimplifyCFG/duplicate-phis.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -instcombine -simplifycfg -S | grep " = phi " | count 1
+; RUN: opt < %s -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | grep " = phi " | count 1
 
 ; instcombine should sort the PHI operands so that simplifycfg can see the
 ; duplicate and remove it.

llvm/test/Transforms/SimplifyCFG/gepcost.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -S -simplifycfg | FileCheck %s
+; RUN: opt < %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 | FileCheck %s
 
 target datalayout = "e-m:e-p:32:32-i64:64-v128:64:128-a:0:32-n32-S64"
 target triple = "thumbv7m-none--eabi"

llvm/test/Transforms/SimplifyCFG/hoist-dbgvalue.ll

@@ -1,4 +1,4 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
 
 define i32 @foo(i32 %i) nounwind ssp !dbg !0 {
   call void @llvm.dbg.value(metadata i32 %i, metadata !6, metadata !DIExpression()), !dbg !7

llvm/test/Transforms/SimplifyCFG/inline-asm-sink.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -mem2reg -simplifycfg -S | FileCheck -enable-var-scope %s
+; RUN: opt < %s -mem2reg -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck -enable-var-scope %s
 
 define i32 @test(i32 %x) {
 ; CHECK-LABEL: @test

llvm/test/Transforms/SimplifyCFG/lifetime.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; Test that a lifetime intrinsic isn't removed because that would change semantics
 

llvm/test/Transforms/SimplifyCFG/merge-default.ll

@@ -1,4 +1,4 @@
-; RUN: opt -simplifycfg -S < %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S < %s | FileCheck %s
 
 target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"

llvm/test/Transforms/SimplifyCFG/noreturn-call.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 ; PR1796
 
 declare void @Finisher(i32) noreturn

llvm/test/Transforms/SimplifyCFG/pr33605.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; Skip simplifying unconditional branches from empty blocks in simplifyCFG,
 ; when it can destroy canonical loop structure.

llvm/test/Transforms/SimplifyCFG/pr35774.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt -simplifycfg -S %s | FileCheck %s
+; RUN: opt -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S %s | FileCheck %s
 
 %foo = type { i32 (%foo)*, i32 }
 

llvm/test/Transforms/SimplifyCFG/preserve-load-metadata-2.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -hoist-common-insts=true -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S | FileCheck %s
 
 declare void @bar(i32*)
 declare void @baz(i32*)

llvm/test/Transforms/SimplifyCFG/preserve-load-metadata-3.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -hoist-common-insts=true -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S | FileCheck %s
 
 declare void @bar(i32*)
 declare void @baz(i32*)

llvm/test/Transforms/SimplifyCFG/preserve-load-metadata.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -hoist-common-insts=true -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -hoist-common-insts=true -S | FileCheck %s
 
 declare void @bar(i32*)
 declare void @baz(i32*)

llvm/test/Transforms/SimplifyCFG/preserve-make-implicit-on-switch-to-br.ll

@@ -1,4 +1,4 @@
-; RUN: opt %s -simplifycfg -S | FileCheck %s
+; RUN: opt %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 
 ; ConstantFoldTerminator function can convert SwitchInst with one case (and default) to
 ; a conditional BranchInst. This test checks the converted BranchInst preserve the

llvm/test/Transforms/SimplifyCFG/seh-nounwind.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -simplifycfg < %s | FileCheck %s
+; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 
 ; Don't remove invokes of nounwind functions if the personality handles async
 ; exceptions. The @div function in this test can fault, even though it can't

llvm/test/Transforms/SimplifyCFG/statepoint-invoke-unwind.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 ; Test that statepoint intrinsic is marked with Throwable attribute and it is
 ; not optimized into call
 

llvm/test/Transforms/SimplifyCFG/suppress-zero-branch-weights.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -simplifycfg < %s | FileCheck %s
+; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 
 ; We're sign extending an 8-bit value.
 ; The switch condition must be in the range [-128, 127], so any cases outside of that range must be dead.

llvm/test/Transforms/SimplifyCFG/trap-debugloc.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -simplifycfg < %s | FileCheck %s
+; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 ; Radar 9342286
 ; Assign DebugLoc to trap instruction.
 define void @foo() nounwind ssp !dbg !0 {

llvm/test/Transforms/SimplifyCFG/trap-no-null-opt-debugloc.ll

@@ -1,4 +1,4 @@
-; RUN: opt -S -simplifycfg < %s | FileCheck %s
+; RUN: opt -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s | FileCheck %s
 define void @foo() nounwind ssp #0 !dbg !0 {
 ; CHECK: store i32 42, i32* null
 ; CHECK-NOT: call void @llvm.trap()

llvm/test/Transforms/SimplifyCFG/trapping-load-unreachable.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 ; PR2967
 
 target datalayout =

llvm/test/Transforms/SimplifyCFG/two-entry-phi-fold-crash.ll

@@ -1,5 +1,5 @@
 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
-; RUN: opt < %s -S -simplifycfg -debug-pass=Details -enable-new-pm=0 2>&1 | FileCheck %s
+; RUN: opt < %s -S -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -debug-pass=Details -enable-new-pm=0 2>&1 | FileCheck %s
 
 ;; Check the report from the pass manager, telling us whether simplifycfg
 ;; reported the "changed" status correctly:

llvm/test/Transforms/SimplifyCFG/volatile-phioper.ll

@@ -1,4 +1,4 @@
-; RUN: opt < %s -simplifycfg -S | FileCheck %s
+; RUN: opt < %s -simplifycfg -simplifycfg-require-and-preserve-domtree=1 -S | FileCheck %s
 ;
 ; rdar:13349374
 ;