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clang-p2996/llvm/test/Transforms/LoopPredication/visited.ll
Anna Thomas 55bdb14026 [LoopPredication] Preserve MemorySSA 
Since LICM has now unconditionally moved to MemorySSA based form, all
passes that run in same LPM as LICM need to preserve MemorySSA (i.e. our
downstream pipeline).

Added loop-mssa to all tests and perform -verify-memoryssa within
LoopPredication itself.

Differential Revision: https://reviews.llvm.org/D108724
2021-08-26 11:36:25 -04:00

162 lines
8.3 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -S -loop-predication < %s 2>&1 | FileCheck %s
; RUN: opt -S -passes='require<scalar-evolution>,loop-mssa(loop-predication)' -verify-memoryssa < %s 2>&1 | FileCheck %s
declare void @llvm.experimental.guard(i1, ...)
define i32 @test_visited(i32* %array, i32 %length, i32 %n, i32 %x) {
; CHECK-LABEL: @test_visited(
; CHECK-NEXT: entry:
; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[N:%.*]], 0
; CHECK-NEXT: br i1 [[TMP5]], label [[EXIT:%.*]], label [[LOOP_PREHEADER:%.*]]
; CHECK: loop.preheader:
; CHECK-NEXT: [[TMP0:%.*]] = icmp ule i32 [[N]], [[LENGTH:%.*]]
; CHECK-NEXT: [[TMP1:%.*]] = icmp ult i32 0, [[LENGTH]]
; CHECK-NEXT: [[TMP2:%.*]] = and i1 [[TMP1]], [[TMP0]]
; CHECK-NEXT: br label [[LOOP:%.*]]
; CHECK: loop:
; CHECK-NEXT: [[LOOP_ACC:%.*]] = phi i32 [ [[LOOP_ACC_NEXT:%.*]], [[LOOP]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[I:%.*]] = phi i32 [ [[I_NEXT:%.*]], [[LOOP]] ], [ 0, [[LOOP_PREHEADER]] ]
; CHECK-NEXT: [[UNRELATED_COND:%.*]] = icmp eq i32 [[X:%.*]], [[I]]
; CHECK-NEXT: [[TMP3:%.*]] = and i1 [[UNRELATED_COND]], [[TMP2]]
; CHECK-NEXT: call void (i1, ...) @llvm.experimental.guard(i1 [[TMP3]], i32 9) [ "deopt"() ]
; CHECK-NEXT: [[I_I64:%.*]] = zext i32 [[I]] to i64
; CHECK-NEXT: [[ARRAY_I_PTR:%.*]] = getelementptr inbounds i32, i32* [[ARRAY:%.*]], i64 [[I_I64]]
; CHECK-NEXT: [[ARRAY_I:%.*]] = load i32, i32* [[ARRAY_I_PTR]], align 4
; CHECK-NEXT: [[LOOP_ACC_NEXT]] = add i32 [[LOOP_ACC]], [[ARRAY_I]]
; CHECK-NEXT: [[I_NEXT]] = add nuw i32 [[I]], 1
; CHECK-NEXT: [[CONTINUE:%.*]] = icmp ult i32 [[I_NEXT]], [[N]]
; CHECK-NEXT: br i1 [[CONTINUE]], label [[LOOP]], label [[EXIT_LOOPEXIT:%.*]]
; CHECK: exit.loopexit:
; CHECK-NEXT: [[LOOP_ACC_NEXT_LCSSA:%.*]] = phi i32 [ [[LOOP_ACC_NEXT]], [[LOOP]] ]
; CHECK-NEXT: br label [[EXIT]]
; CHECK: exit:
; CHECK-NEXT: [[RESULT:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[LOOP_ACC_NEXT_LCSSA]], [[EXIT_LOOPEXIT]] ]
; CHECK-NEXT: ret i32 [[RESULT]]
;
entry:
%tmp5 = icmp eq i32 %n, 0
br i1 %tmp5, label %exit, label %loop.preheader
loop.preheader:
br label %loop
loop:
%loop.acc = phi i32 [ %loop.acc.next, %loop ], [ 0, %loop.preheader ]
%i = phi i32 [ %i.next, %loop ], [ 0, %loop.preheader ]
%within.bounds = icmp ult i32 %i, %length
%unrelated.cond = icmp eq i32 %x, %i
%guard.cond.2 = and i1 %within.bounds, %unrelated.cond
%guard.cond.3 = and i1 %guard.cond.2, %unrelated.cond
%guard.cond.4 = and i1 %guard.cond.3, %guard.cond.2
%guard.cond.5 = and i1 %guard.cond.4, %guard.cond.3
%guard.cond.6 = and i1 %guard.cond.5, %guard.cond.4
%guard.cond.7 = and i1 %guard.cond.6, %guard.cond.5
%guard.cond.8 = and i1 %guard.cond.7, %guard.cond.6
%guard.cond.9 = and i1 %guard.cond.8, %guard.cond.7
%guard.cond.10 = and i1 %guard.cond.9, %guard.cond.8
%guard.cond.11 = and i1 %guard.cond.10, %guard.cond.9
%guard.cond.12 = and i1 %guard.cond.11, %guard.cond.10
%guard.cond.13 = and i1 %guard.cond.12, %guard.cond.11
%guard.cond.14 = and i1 %guard.cond.13, %guard.cond.12
%guard.cond.15 = and i1 %guard.cond.14, %guard.cond.13
%guard.cond.16 = and i1 %guard.cond.15, %guard.cond.14
%guard.cond.17 = and i1 %guard.cond.16, %guard.cond.15
%guard.cond.18 = and i1 %guard.cond.17, %guard.cond.16
%guard.cond.19 = and i1 %guard.cond.18, %guard.cond.17
%guard.cond.20 = and i1 %guard.cond.19, %guard.cond.18
%guard.cond.21 = and i1 %guard.cond.20, %guard.cond.19
%guard.cond.22 = and i1 %guard.cond.21, %guard.cond.20
%guard.cond.23 = and i1 %guard.cond.22, %guard.cond.21
%guard.cond.24 = and i1 %guard.cond.23, %guard.cond.22
%guard.cond.25 = and i1 %guard.cond.24, %guard.cond.23
%guard.cond.26 = and i1 %guard.cond.25, %guard.cond.24
%guard.cond.27 = and i1 %guard.cond.26, %guard.cond.25
%guard.cond.28 = and i1 %guard.cond.27, %guard.cond.26
%guard.cond.29 = and i1 %guard.cond.28, %guard.cond.27
%guard.cond.30 = and i1 %guard.cond.29, %guard.cond.28
%guard.cond.31 = and i1 %guard.cond.30, %guard.cond.29
%guard.cond.32 = and i1 %guard.cond.31, %guard.cond.30
%guard.cond.33 = and i1 %guard.cond.32, %guard.cond.31
%guard.cond.34 = and i1 %guard.cond.33, %guard.cond.32
%guard.cond.35 = and i1 %guard.cond.34, %guard.cond.33
%guard.cond.36 = and i1 %guard.cond.35, %guard.cond.34
%guard.cond.37 = and i1 %guard.cond.36, %guard.cond.35
%guard.cond.38 = and i1 %guard.cond.37, %guard.cond.36
%guard.cond.39 = and i1 %guard.cond.38, %guard.cond.37
%guard.cond.40 = and i1 %guard.cond.39, %guard.cond.38
%guard.cond.41 = and i1 %guard.cond.40, %guard.cond.39
%guard.cond.42 = and i1 %guard.cond.41, %guard.cond.40
%guard.cond.43 = and i1 %guard.cond.42, %guard.cond.41
%guard.cond.44 = and i1 %guard.cond.43, %guard.cond.42
%guard.cond.45 = and i1 %guard.cond.44, %guard.cond.43
%guard.cond.46 = and i1 %guard.cond.45, %guard.cond.44
%guard.cond.47 = and i1 %guard.cond.46, %guard.cond.45
%guard.cond.48 = and i1 %guard.cond.47, %guard.cond.46
%guard.cond.49 = and i1 %guard.cond.48, %guard.cond.47
%guard.cond.50 = and i1 %guard.cond.49, %guard.cond.48
%guard.cond.51 = and i1 %guard.cond.50, %guard.cond.49
%guard.cond.52 = and i1 %guard.cond.51, %guard.cond.50
%guard.cond.53 = and i1 %guard.cond.52, %guard.cond.51
%guard.cond.54 = and i1 %guard.cond.53, %guard.cond.52
%guard.cond.55 = and i1 %guard.cond.54, %guard.cond.53
%guard.cond.56 = and i1 %guard.cond.55, %guard.cond.54
%guard.cond.57 = and i1 %guard.cond.56, %guard.cond.55
%guard.cond.58 = and i1 %guard.cond.57, %guard.cond.56
%guard.cond.59 = and i1 %guard.cond.58, %guard.cond.57
%guard.cond.60 = and i1 %guard.cond.59, %guard.cond.58
%guard.cond.61 = and i1 %guard.cond.60, %guard.cond.59
%guard.cond.62 = and i1 %guard.cond.61, %guard.cond.60
%guard.cond.63 = and i1 %guard.cond.62, %guard.cond.61
%guard.cond.64 = and i1 %guard.cond.63, %guard.cond.62
%guard.cond.65 = and i1 %guard.cond.64, %guard.cond.63
%guard.cond.66 = and i1 %guard.cond.65, %guard.cond.64
%guard.cond.67 = and i1 %guard.cond.66, %guard.cond.65
%guard.cond.68 = and i1 %guard.cond.67, %guard.cond.66
%guard.cond.69 = and i1 %guard.cond.68, %guard.cond.67
%guard.cond.70 = and i1 %guard.cond.69, %guard.cond.68
%guard.cond.71 = and i1 %guard.cond.70, %guard.cond.69
%guard.cond.72 = and i1 %guard.cond.71, %guard.cond.70
%guard.cond.73 = and i1 %guard.cond.72, %guard.cond.71
%guard.cond.74 = and i1 %guard.cond.73, %guard.cond.72
%guard.cond.75 = and i1 %guard.cond.74, %guard.cond.73
%guard.cond.76 = and i1 %guard.cond.75, %guard.cond.74
%guard.cond.77 = and i1 %guard.cond.76, %guard.cond.75
%guard.cond.78 = and i1 %guard.cond.77, %guard.cond.76
%guard.cond.79 = and i1 %guard.cond.78, %guard.cond.77
%guard.cond.80 = and i1 %guard.cond.79, %guard.cond.78
%guard.cond.81 = and i1 %guard.cond.80, %guard.cond.79
%guard.cond.82 = and i1 %guard.cond.81, %guard.cond.80
%guard.cond.83 = and i1 %guard.cond.82, %guard.cond.81
%guard.cond.84 = and i1 %guard.cond.83, %guard.cond.82
%guard.cond.85 = and i1 %guard.cond.84, %guard.cond.83
%guard.cond.86 = and i1 %guard.cond.85, %guard.cond.84
%guard.cond.87 = and i1 %guard.cond.86, %guard.cond.85
%guard.cond.88 = and i1 %guard.cond.87, %guard.cond.86
%guard.cond.89 = and i1 %guard.cond.88, %guard.cond.87
%guard.cond.90 = and i1 %guard.cond.89, %guard.cond.88
%guard.cond.91 = and i1 %guard.cond.90, %guard.cond.89
%guard.cond.92 = and i1 %guard.cond.91, %guard.cond.90
%guard.cond.93 = and i1 %guard.cond.92, %guard.cond.91
%guard.cond.94 = and i1 %guard.cond.93, %guard.cond.92
%guard.cond.95 = and i1 %guard.cond.94, %guard.cond.93
%guard.cond.96 = and i1 %guard.cond.95, %guard.cond.94
%guard.cond.97 = and i1 %guard.cond.96, %guard.cond.95
%guard.cond.98 = and i1 %guard.cond.97, %guard.cond.96
%guard.cond.99 = and i1 %guard.cond.98, %guard.cond.97
call void (i1, ...) @llvm.experimental.guard(i1 %guard.cond.99, i32 9) [ "deopt"() ]
%i.i64 = zext i32 %i to i64
%array.i.ptr = getelementptr inbounds i32, i32* %array, i64 %i.i64
%array.i = load i32, i32* %array.i.ptr, align 4
%loop.acc.next = add i32 %loop.acc, %array.i
%i.next = add nuw i32 %i, 1
%continue = icmp ult i32 %i.next, %n
br i1 %continue, label %loop, label %exit
exit:
%result = phi i32 [ 0, %entry ], [ %loop.acc.next, %loop ]
ret i32 %result
}
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