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llvm-6502/test/Transforms/LoopVectorize/X86/illegal-parallel-loop-uniform-write.ll

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Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
; RUN: opt < %s -loop-vectorize -force-vector-unroll=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"
;CHECK: @foo
Call the potentially costly isAnnotatedParallel() only once. Made the uniform write test's checks a bit stricter. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180119 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 16:44:43 +00:00
;CHECK-NOT: <4 x i32>
;CHECK: ret void
Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
; Function Attrs: nounwind uwtable
define void @foo(i32* nocapture %a, i32* nocapture %b, i32 %k, i32 %m) #0 {
entry:
%cmp27 = icmp sgt i32 %m, 0
br i1 %cmp27, label %for.body3.lr.ph.us, label %for.end15
for.end.us: ; preds = %for.body3.us
%arrayidx9.us = getelementptr inbounds i32* %b, i64 %indvars.iv33
TBAA: remove !tbaa from testing cases if not used. This will make it easier to turn on struct-path aware TBAA since the metadata format will change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180796 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 17:52:57 +00:00
%0 = load i32* %arrayidx9.us, align 4, !llvm.mem.parallel_loop_access !3
Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
%add10.us = add nsw i32 %0, 3
TBAA: remove !tbaa from testing cases if not used. This will make it easier to turn on struct-path aware TBAA since the metadata format will change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180796 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 17:52:57 +00:00
store i32 %add10.us, i32* %arrayidx9.us, align 4, !llvm.mem.parallel_loop_access !3
Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
%indvars.iv.next34 = add i64 %indvars.iv33, 1
%lftr.wideiv35 = trunc i64 %indvars.iv.next34 to i32
%exitcond36 = icmp eq i32 %lftr.wideiv35, %m
br i1 %exitcond36, label %for.end15, label %for.body3.lr.ph.us, !llvm.loop.parallel !5
for.body3.us: ; preds = %for.body3.us, %for.body3.lr.ph.us
%indvars.iv29 = phi i64 [ 0, %for.body3.lr.ph.us ], [ %indvars.iv.next30, %for.body3.us ]
%1 = trunc i64 %indvars.iv29 to i32
%add4.us = add i32 %add.us, %1
%idxprom.us = sext i32 %add4.us to i64
%arrayidx.us = getelementptr inbounds i32* %a, i64 %idxprom.us
TBAA: remove !tbaa from testing cases if not used. This will make it easier to turn on struct-path aware TBAA since the metadata format will change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180796 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 17:52:57 +00:00
%2 = load i32* %arrayidx.us, align 4, !llvm.mem.parallel_loop_access !3
Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
%add5.us = add nsw i32 %2, 1
TBAA: remove !tbaa from testing cases if not used. This will make it easier to turn on struct-path aware TBAA since the metadata format will change. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180796 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-30 17:52:57 +00:00
store i32 %add5.us, i32* %arrayidx7.us, align 4, !llvm.mem.parallel_loop_access !3
Refuse to (even try to) vectorize loops which have uniform writes, even if erroneously annotated with the parallel loop metadata. Fixes Bug 15794: "Loop Vectorizer: Crashes with the use of llvm.loop.parallel metadata" git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@180081 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-23 08:08:51 +00:00
%indvars.iv.next30 = add i64 %indvars.iv29, 1
%lftr.wideiv31 = trunc i64 %indvars.iv.next30 to i32
%exitcond32 = icmp eq i32 %lftr.wideiv31, %m
br i1 %exitcond32, label %for.end.us, label %for.body3.us, !llvm.loop.parallel !4
for.body3.lr.ph.us: ; preds = %for.end.us, %entry
%indvars.iv33 = phi i64 [ %indvars.iv.next34, %for.end.us ], [ 0, %entry ]
%3 = trunc i64 %indvars.iv33 to i32
%add.us = add i32 %3, %k
%arrayidx7.us = getelementptr inbounds i32* %a, i64 %indvars.iv33
br label %for.body3.us
for.end15: ; preds = %for.end.us, %entry
ret void
}
attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-frame-pointer-elim-non-leaf"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "unsafe-fp-math"="false" "use-soft-float"="false" }
!3 = metadata !{metadata !4, metadata !5}
!4 = metadata !{metadata !4}
!5 = metadata !{metadata !5}
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