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New testcase for bug in levelraise

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llvm-svn: 1759
This commit is contained in:
Chris Lattner 2002-02-14 18:52:18 +00:00
parent 71649aaf9d
commit 849f73b2e9
1 changed files with 69 additions and 0 deletions
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69
test/Regression/Transforms/LevelRaise/2002-02-14-InstDelete.ll Normal file
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; The -raise pass is not correctly deleting instructions in all cases where it
; should, which leaves the instruction to be deleted by DCE. This is bad
; because some instructions are left in an invalid form, causing an assertion
; failure. In this case, a chain of instructions, including a zero argument;
; PHI node is left behind.
;
; RUN: as < %s | opt -raise -q
;
%Hash = type { { uint, sbyte *, \2 } * *, int (uint) *, int } *
%HashEntry = type { uint, sbyte *, \2 } *
%hash = type { { uint, sbyte *, \2 } * *, int (uint) *, int }
%hash_entry = type { uint, sbyte *, \2 * }
implementation
void "HashDelete"(uint %key, %Hash %hash)
begin
bb1: ;[#uses=1]
%cast1006 = cast %Hash %hash to sbyte * ; <sbyte *> [#uses=1]
%cast1007 = cast ulong 8 to sbyte * ; <sbyte *> [#uses=1]
%reg1000 = add sbyte * %cast1006, %cast1007 ; <sbyte *> [#uses=1]
%cast1008 = cast sbyte * %reg1000 to sbyte * * ; <sbyte * *> [#uses=1]
%reg111 = load sbyte * * %cast1008 ; <sbyte *> [#uses=1]
%cast1009 = cast sbyte * %reg111 to uint (...) * ; <uint (...) *> [#uses=1]
%reg110 = call uint (...) * %cast1009( uint %key ) ; <uint> [#uses=1]
%reg114 = shl uint %reg110, ubyte 3 ; <uint> [#uses=1]
%cast115 = cast uint %reg114 to ulong ; <ulong> [#uses=1]
%cast116 = cast ulong %cast115 to sbyte * ; <sbyte *> [#uses=1]
%cast1010 = cast %Hash %hash to sbyte * * ; <sbyte * *> [#uses=1]
%reg117 = load sbyte * * %cast1010 ; <sbyte *> [#uses=1]
%reg112 = add sbyte * %reg117, %cast116 ; <sbyte *> [#uses=4]
%cast1011 = cast sbyte * %reg112 to sbyte * * ; <sbyte * *> [#uses=1]
%reg122 = load sbyte * * %cast1011 ; <sbyte *> [#uses=2]
%cast1012 = cast ulong 0 to sbyte * ; <sbyte *> [#uses=1]
%cond1001 = seteq sbyte * %reg122, %cast1012 ; <bool> [#uses=1]
br bool %cond1001, label %bb5, label %bb2
bb2: ;[#uses=3]
%cast1013 = cast sbyte * %reg122 to uint * ; <uint *> [#uses=1]
%reg124 = load uint * %cast1013 ; <uint> [#uses=1]
%cond1002 = seteq uint %reg124, %key ; <bool> [#uses=1]
br bool %cond1002, label %bb5, label %bb3
bb3: ;[#uses=3]
%reg125 = phi sbyte * [ %reg126, %bb4 ], [ %reg112, %bb2 ] ; <sbyte *> [#uses=1]
%cast1014 = cast sbyte * %reg125 to sbyte * * ; <sbyte * *> [#uses=1]
%reg121 = load sbyte * * %cast1014 ; <sbyte *> [#uses=2]
%cast1015 = cast ulong 16 to sbyte * ; <sbyte *> [#uses=1]
%reg126 = add sbyte * %reg121, %cast1015 ; <sbyte *> [#uses=3]
%cast1016 = cast ulong 16 to sbyte * ; <sbyte *> [#uses=1]
%reg1003 = add sbyte * %reg121, %cast1016 ; <sbyte *> [#uses=1]
%cast1017 = cast sbyte * %reg1003 to sbyte * * ; <sbyte * *> [#uses=1]
%reg118 = load sbyte * * %cast1017 ; <sbyte *> [#uses=2]
%cast1018 = cast ulong 0 to sbyte * ; <sbyte *> [#uses=1]
%cond1004 = seteq sbyte * %reg118, %cast1018 ; <bool> [#uses=1]
br bool %cond1004, label %bb5, label %bb4
bb4: ;[#uses=3]
%cast1019 = cast sbyte * %reg118 to uint * ; <uint *> [#uses=1]
%reg120 = load uint * %cast1019 ; <uint> [#uses=1]
%cond1005 = setne uint %reg120, %key ; <bool> [#uses=1]
br bool %cond1005, label %bb3, label %bb5
bb5: ;[#uses=4]
%reg127 = phi sbyte * [ %reg126, %bb4 ], [ %reg126, %bb3 ], [ %reg112, %bb2 ], [ %reg112, %bb1 ] ; <sbyte *> [#uses=1]
call int (...) * %foo( sbyte * %reg127 ) ; <int>:0 [#uses=0]
ret void
end
declare int "foo"(...)