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llvm-mirror/test/CodeGen/Hexagon/swp-epilog-phi10.ll
Krzysztof Parzyszek 8d7cd1c8ba Fix two bugs in the pipeliner in renaming phis in the prolog and epilog
When the pipeliner is renaming phi values, it may need to iterate through
the phi operands to check for other phis. However, the pipeliner should
stop once it reaches a phi that is outside the pipelined loop.

Also, when the generateExistingPhis code is unable to reuse an existing
phi, the default code that computes the PhiOp2 is only to be used when
the pipeliner is generating the kernel. Otherwise, the phi may be a value
computed earlier in the same epilog.

Patch by Brendon Cahoon.

llvm-svn: 290355
2016-12-22 18:49:55 +00:00

89 lines
4.0 KiB
LLVM

; RUN: llc -march=hexagon -mcpu=hexagonv5 < %s
; REQUIRES: asserts
define void @test(i8* noalias nocapture readonly %src, i32 %srcStride) local_unnamed_addr #0 {
entry:
%add.ptr = getelementptr inbounds i8, i8* %src, i32 %srcStride
%add.ptr2 = getelementptr inbounds i8, i8* %add.ptr, i32 %srcStride
%add.ptr3 = getelementptr inbounds i8, i8* %add.ptr2, i32 %srcStride
br label %for.body9.epil
for.body9.epil:
%inc.sink385.epil = phi i32 [ %add17.epil, %for.body9.epil ], [ 2, %entry ]
%sr.epil = phi i8 [ %0, %for.body9.epil ], [ undef, %entry ]
%sr431.epil = phi i8 [ %2, %for.body9.epil ], [ 0, %entry ]
%sr432.epil = phi i8 [ %sr431.epil, %for.body9.epil ], [ 0, %entry ]
%epil.iter = phi i32 [ %epil.iter.sub, %for.body9.epil ], [ undef, %entry ]
%sub11.epil = add i32 %inc.sink385.epil, -1
%add17.epil = add nuw i32 %inc.sink385.epil, 1
%conv19.epil = zext i8 %sr.epil to i32
%add21.epil = add i32 %inc.sink385.epil, 2
%arrayidx22.epil = getelementptr inbounds i8, i8* %src, i32 %add21.epil
%0 = load i8, i8* %arrayidx22.epil, align 1
%conv23.epil = zext i8 %0 to i32
%1 = load i8, i8* undef, align 1
%conv42.epil = zext i8 %1 to i32
%conv53.epil = zext i8 %sr432.epil to i32
%2 = load i8, i8* undef, align 1
%conv61.epil = zext i8 %2 to i32
%3 = load i8, i8* undef, align 1
%conv65.epil = zext i8 %3 to i32
%4 = load i8, i8* null, align 1
%conv69.epil = zext i8 %4 to i32
%5 = load i8, i8* undef, align 1
%conv72.epil = zext i8 %5 to i32
%6 = load i8, i8* undef, align 1
%conv76.epil = zext i8 %6 to i32
%7 = load i8, i8* undef, align 1
%conv80.epil = zext i8 %7 to i32
%8 = load i8, i8* undef, align 1
%conv84.epil = zext i8 %8 to i32
%9 = load i8, i8* undef, align 1
%conv88.epil = zext i8 %9 to i32
%10 = load i8, i8* undef, align 1
%conv91.epil = zext i8 %10 to i32
%11 = load i8, i8* undef, align 1
%conv95.epil = zext i8 %11 to i32
%12 = load i8, i8* undef, align 1
%conv99.epil = zext i8 %12 to i32
%add.epil = add nuw nsw i32 0, %conv19.epil
%add16.epil = add nuw nsw i32 %add.epil, 0
%add20.epil = add nuw nsw i32 %add16.epil, 0
%add24.epil = add nuw nsw i32 %add20.epil, 0
%add28.epil = add nuw nsw i32 %add24.epil, 0
%add32.epil = add nuw nsw i32 %add28.epil, 0
%add35.epil = add i32 %add32.epil, 0
%add39.epil = add i32 %add35.epil, 0
%add43.epil = add i32 %add39.epil, %conv53.epil
%add47.epil = add i32 %add43.epil, 0
%add51.epil = add i32 %add47.epil, 0
%add54.epil = add i32 %add51.epil, %conv23.epil
%add58.epil = add i32 %add54.epil, %conv42.epil
%add62.epil = add i32 %add58.epil, %conv61.epil
%add66.epil = add i32 %add62.epil, %conv65.epil
%add70.epil = add i32 %add66.epil, %conv69.epil
%add73.epil = add i32 %add70.epil, %conv72.epil
%add77.epil = add i32 %add73.epil, %conv76.epil
%add81.epil = add i32 %add77.epil, %conv80.epil
%add85.epil = add i32 %add81.epil, %conv84.epil
%add89.epil = add i32 %add85.epil, %conv88.epil
%add92.epil = add i32 %add89.epil, %conv91.epil
%add96.epil = add i32 %add92.epil, %conv95.epil
%add100.epil = add i32 %add96.epil, %conv99.epil
%mul.epil = mul nsw i32 %add100.epil, 2621
%add101.epil = add nsw i32 %mul.epil, 32768
%shr369.epil = lshr i32 %add101.epil, 16
%conv102.epil = trunc i32 %shr369.epil to i8
%arrayidx103.epil = getelementptr inbounds i8, i8* undef, i32 %inc.sink385.epil
store i8 %conv102.epil, i8* %arrayidx103.epil, align 1
%epil.iter.sub = add i32 %epil.iter, -1
%epil.iter.cmp = icmp eq i32 %epil.iter.sub, 0
br i1 %epil.iter.cmp, label %for.end, label %for.body9.epil
for.end:
unreachable
}
attributes #0 = { norecurse nounwind "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="hexagonv5" "unsafe-fp-math"="false" "use-soft-float"="false" }