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clang-p2996/llvm/test/Transforms/LoopDistribute/basic-with-memchecks.ll
Florian Hahn 555e09c2b0 [LAA] Rename printing pass to print<access-info>. 
This updates the naming for the LAA printing pass to be in line with
most other analysis printing passes.

The old name has come up as confusing multiple times already, e.g. in
D131924.
2022-08-26 11:00:09 +01:00

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8.7 KiB
LLVM
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; RUN: opt -aa-pipeline=basic-aa -passes=loop-distribute -enable-loop-distribute -verify-loop-info -verify-dom-info -S \
; RUN: < %s | FileCheck %s
; RUN: opt -aa-pipeline=basic-aa -passes='loop-distribute,loop-vectorize' -enable-loop-distribute -force-vector-width=4 \
; RUN: -verify-loop-info -verify-dom-info -S < %s | \
; RUN: FileCheck --check-prefix=VECTORIZE %s
; RUN: opt -aa-pipeline=basic-aa -passes='loop-distribute,print<access-info>' -enable-loop-distribute \
; RUN: -verify-loop-info -verify-dom-info -disable-output < %s 2>&1 | FileCheck %s --check-prefix=ANALYSIS
; The memcheck version of basic.ll. We should distribute and vectorize the
; second part of this loop with 5 memchecks (A+1 x {C, D, E} + C x {A, B})
;
; for (i = 0; i < n; i++) {
; A[i + 1] = A[i] * B[i];
; -------------------------------
; C[i] = D[i] * E[i];
; }
target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
target triple = "x86_64-apple-macosx10.10.0"
@B = common global i32* null, align 8
@A = common global i32* null, align 8
@C = common global i32* null, align 8
@D = common global i32* null, align 8
@E = common global i32* null, align 8
; CHECK-LABEL: @f(
define void @f() {
entry:
%a = load i32*, i32** @A, align 8
%b = load i32*, i32** @B, align 8
%c = load i32*, i32** @C, align 8
%d = load i32*, i32** @D, align 8
%e = load i32*, i32** @E, align 8
br label %for.body
; We have two compares for each array overlap check.
; Since the checks to A and A + 4 get merged, this will give us a
; total of 8 compares.
;
; CHECK: for.body.lver.check:
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK: = icmp
; CHECK-NOT: = icmp
; CHECK: br i1 %conflict.rdx25, label %for.body.ph.lver.orig, label %for.body.ph.ldist1
; The non-distributed loop that the memchecks fall back on.
; CHECK: for.body.ph.lver.orig:
; CHECK: br label %for.body.lver.orig
; CHECK: for.body.lver.orig:
; CHECK: br i1 %exitcond.lver.orig, label %for.end.loopexit, label %for.body.lver.orig
; Verify the two distributed loops.
; CHECK: for.body.ph.ldist1:
; CHECK: br label %for.body.ldist1
; CHECK: for.body.ldist1:
; CHECK: %mulA.ldist1 = mul i32 %loadB.ldist1, %loadA.ldist1
; CHECK: br i1 %exitcond.ldist1, label %for.body.ph, label %for.body.ldist1
; CHECK: for.body.ph:
; CHECK: br label %for.body
; CHECK: for.body:
; CHECK: %mulC = mul i32 %loadD, %loadE
; CHECK: for.end:
; VECTORIZE: mul <4 x i32>
for.body: ; preds = %for.body, %entry
%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
%loadA = load i32, i32* %arrayidxA, align 4
%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
%loadB = load i32, i32* %arrayidxB, align 4
%mulA = mul i32 %loadB, %loadA
%add = add nuw nsw i64 %ind, 1
%arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
store i32 %mulA, i32* %arrayidxA_plus_4, align 4
%arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
%loadD = load i32, i32* %arrayidxD, align 4
%arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
%loadE = load i32, i32* %arrayidxE, align 4
%mulC = mul i32 %loadD, %loadE
%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
store i32 %mulC, i32* %arrayidxC, align 4
%exitcond = icmp eq i64 %add, 20
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
; Make sure there's no "Multiple reports generated" assert with a
; volatile load, and no distribution
; TODO: Distribution of volatile may be possible under some
; circumstance, but the current implementation does not touch them.
; CHECK-LABEL: @f_volatile_load(
; CHECK: br label %for.body{{$}}
; CHECK-NOT: load
; CHECK: {{^}}for.body:
; CHECK: load i32
; CHECK: load i32
; CHECK: load volatile i32
; CHECK: load i32
; CHECK: br i1 %exitcond, label %for.end, label %for.body{{$}}
; CHECK-NOT: load
; VECTORIZE-NOT: load <4 x i32>
; VECTORIZE-NOT: mul <4 x i32>
define void @f_volatile_load() {
entry:
%a = load i32*, i32** @A, align 8
%b = load i32*, i32** @B, align 8
%c = load i32*, i32** @C, align 8
%d = load i32*, i32** @D, align 8
%e = load i32*, i32** @E, align 8
br label %for.body
for.body:
%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
%loadA = load i32, i32* %arrayidxA, align 4
%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
%loadB = load i32, i32* %arrayidxB, align 4
%mulA = mul i32 %loadB, %loadA
%add = add nuw nsw i64 %ind, 1
%arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
store i32 %mulA, i32* %arrayidxA_plus_4, align 4
%arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
%loadD = load volatile i32, i32* %arrayidxD, align 4
%arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
%loadE = load i32, i32* %arrayidxE, align 4
%mulC = mul i32 %loadD, %loadE
%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
store i32 %mulC, i32* %arrayidxC, align 4
%exitcond = icmp eq i64 %add, 20
br i1 %exitcond, label %for.end, label %for.body
for.end:
ret void
}
declare i32 @llvm.convergent(i32) #0
; This is the same as f, and would require the same bounds
; check. However, it is not OK to introduce new control dependencies
; on the convergent call.
; CHECK-LABEL: @f_with_convergent(
; CHECK: call i32 @llvm.convergent
; CHECK-NOT: call i32 @llvm.convergent
; ANALYSIS: for.body:
; ANALYSIS: Report: cannot add control dependency to convergent operation
define void @f_with_convergent() #1 {
entry:
%a = load i32*, i32** @A, align 8
%b = load i32*, i32** @B, align 8
%c = load i32*, i32** @C, align 8
%d = load i32*, i32** @D, align 8
%e = load i32*, i32** @E, align 8
br label %for.body
for.body: ; preds = %for.body, %entry
%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
%loadA = load i32, i32* %arrayidxA, align 4
%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
%loadB = load i32, i32* %arrayidxB, align 4
%mulA = mul i32 %loadB, %loadA
%add = add nuw nsw i64 %ind, 1
%arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
store i32 %mulA, i32* %arrayidxA_plus_4, align 4
%arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
%loadD = load i32, i32* %arrayidxD, align 4
%arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
%loadE = load i32, i32* %arrayidxE, align 4
%convergentD = call i32 @llvm.convergent(i32 %loadD)
%mulC = mul i32 %convergentD, %loadE
%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
store i32 %mulC, i32* %arrayidxC, align 4
%exitcond = icmp eq i64 %add, 20
br i1 %exitcond, label %for.end, label %for.body
for.end: ; preds = %for.body
ret void
}
; Make sure an explicit request for distribution is ignored if it
; requires possibly illegal checks.
; CHECK-LABEL: @f_with_convergent_forced_distribute(
; CHECK: call i32 @llvm.convergent
; CHECK-NOT: call i32 @llvm.convergent
define void @f_with_convergent_forced_distribute() #1 {
entry:
%a = load i32*, i32** @A, align 8
%b = load i32*, i32** @B, align 8
%c = load i32*, i32** @C, align 8
%d = load i32*, i32** @D, align 8
%e = load i32*, i32** @E, align 8
br label %for.body
for.body: ; preds = %for.body, %entry
%ind = phi i64 [ 0, %entry ], [ %add, %for.body ]
%arrayidxA = getelementptr inbounds i32, i32* %a, i64 %ind
%loadA = load i32, i32* %arrayidxA, align 4
%arrayidxB = getelementptr inbounds i32, i32* %b, i64 %ind
%loadB = load i32, i32* %arrayidxB, align 4
%mulA = mul i32 %loadB, %loadA
%add = add nuw nsw i64 %ind, 1
%arrayidxA_plus_4 = getelementptr inbounds i32, i32* %a, i64 %add
store i32 %mulA, i32* %arrayidxA_plus_4, align 4
%arrayidxD = getelementptr inbounds i32, i32* %d, i64 %ind
%loadD = load i32, i32* %arrayidxD, align 4
%arrayidxE = getelementptr inbounds i32, i32* %e, i64 %ind
%loadE = load i32, i32* %arrayidxE, align 4
%convergentD = call i32 @llvm.convergent(i32 %loadD)
%mulC = mul i32 %convergentD, %loadE
%arrayidxC = getelementptr inbounds i32, i32* %c, i64 %ind
store i32 %mulC, i32* %arrayidxC, align 4
%exitcond = icmp eq i64 %add, 20
br i1 %exitcond, label %for.end, label %for.body, !llvm.loop !0
for.end: ; preds = %for.body
ret void
}
attributes #0 = { nounwind readnone convergent }
attributes #1 = { nounwind convergent }
!0 = distinct !{!0, !1}
!1 = !{!"llvm.loop.distribute.enable", i1 true}
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