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[MemorySSA] Generate check lines for test.

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This is to ensure we produce the same code when switching to
SimpleLoopUnswitch.
This commit is contained in:
Florian Hahn 2022-04-25 09:02:42 +01:00
parent c2a8490193
commit cd81ecba2c
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1 changed files with 21 additions and 1 deletions
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22
llvm/test/Analysis/MemorySSA/update-remove-dead-blocks.ll
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@ -1,3 +1,4 @@
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -loop-unswitch -loop-reduce -loop-simplifycfg -verify-memoryssa -S %s | FileCheck %s
; TODO: also run with NPM, but currently LSR does not preserve LCSSA, causing a verification failure on the test.
@ -14,7 +15,26 @@ target triple = "x86_64-unknown-linux-gnu"
@c = external global [1 x i32], align 4
define i32* @test() {
; CHECK-LABEL: @test
; CHECK-LABEL: @test(
; CHECK-NEXT: entry:
; CHECK-NEXT: switch i32 0, label [[ENTRY_SPLIT:%.*]] [
; CHECK-NEXT: i32 1, label [[FOR_BODY3SPLIT:%.*]]
; CHECK-NEXT: i32 2, label [[FOR_COND2_2_FOR_BODY3_CRIT_EDGE:%.*]]
; CHECK-NEXT: ]
; CHECK: entry.split:
; CHECK-NEXT: br label [[FOR_COND:%.*]]
; CHECK: for.cond:
; CHECK-NEXT: [[STOREMERGE:%.*]] = phi i64 [ 0, [[ENTRY_SPLIT]] ], [ [[INC7:%.*]], [[FOR_COND]] ]
; CHECK-NEXT: [[INC7]] = add nsw i64 [[STOREMERGE]], 1
; CHECK-NEXT: br label [[FOR_COND]]
; CHECK: for.body3split:
; CHECK-NEXT: br label [[FOR_BODY3:%.*]]
; CHECK: for.cond2.2.for.body3_crit_edge:
; CHECK-NEXT: br label [[FOR_BODY3]]
; CHECK: for.body3:
; CHECK-NEXT: [[STOREMERGE_LCSSA:%.*]] = phi i64 [ undef, [[FOR_COND2_2_FOR_BODY3_CRIT_EDGE]] ], [ undef, [[FOR_BODY3SPLIT]] ]
; CHECK-NEXT: [[ARRAYIDX:%.*]] = getelementptr inbounds [1 x i32], [1 x i32]* @c, i64 0, i64 [[STOREMERGE_LCSSA]]
; CHECK-NEXT: ret i32* [[ARRAYIDX]]
;
entry: ; preds = %entry
br label %for.cond