mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-26 07:29:55 +00:00
b2b2273ef4
The LoopSimplify bug is pretty harmless because the loop goes from unanalyzable to analyzable but the LCSSA bug is very nasty. It only comes into play with a specific order of the LoopPassManager worklist and can cause actual miscompilations, when a SCEV refers to a value that has been replaced with PHI node. SCEVExpander may then insert code into the wrong place, either violating domination or randomly miscompiling stuff. Comes with an extensive test case reduced from the test-suite with bugpoint+SCEVValidator. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@166787 91177308-0d34-0410-b5e6-96231b3b80d8
422 lines
17 KiB
LLVM
422 lines
17 KiB
LLVM
; RUN: opt < %s -S -indvars -verify-scev
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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"
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target triple = "x86_64-apple-macosx10.8.0"
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define void @test1() nounwind uwtable ssp {
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entry:
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br i1 undef, label %for.end, label %for.body
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for.body: ; preds = %for.body, %entry
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br i1 false, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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br i1 undef, label %for.end11, label %for.body3
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for.body3: ; preds = %for.end
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unreachable
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for.end11: ; preds = %for.end
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br i1 undef, label %while.body, label %while.end
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while.body: ; preds = %for.end11
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unreachable
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while.end: ; preds = %for.end11
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br i1 undef, label %if.end115, label %for.cond109
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for.cond109: ; preds = %while.end
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unreachable
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if.end115: ; preds = %while.end
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br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
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while.body119.lr.ph.lr.ph: ; preds = %if.end115
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br i1 undef, label %for.cond612, label %if.end123.us
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if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
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br label %for.cond132.us
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for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
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br i1 undef, label %if.then136.us, label %for.cond132.us
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if.then136.us: ; preds = %for.cond132.us
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br i1 undef, label %while.end220, label %while.body211
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while.body211: ; preds = %while.body211, %if.then136.us
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br i1 undef, label %while.end220, label %while.body211
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while.end220: ; preds = %while.body211, %if.then136.us
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br label %for.cond246.outer
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for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
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br label %for.cond246
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for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
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br i1 undef, label %for.end562, label %if.end250
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if.end250: ; preds = %for.cond246
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br i1 undef, label %if.end256, label %for.end562
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if.end256: ; preds = %if.end250
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%cmp272 = icmp eq i32 undef, undef
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br i1 %cmp272, label %if.then274, label %for.cond404.preheader
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for.cond404.preheader: ; preds = %if.end256
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br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
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for.body409.lr.ph: ; preds = %for.cond404.preheader
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br label %for.body409
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if.then274: ; preds = %if.end256
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br i1 undef, label %for.cond246.outer, label %if.end309
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if.end309: ; preds = %if.then274
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.body361: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.cond372.loopexit: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond394.preheader, label %for.cond246
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for.cond394.preheader: ; preds = %for.cond372.loopexit
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br i1 undef, label %for.cond246.outer, label %for.body397
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for.body397: ; preds = %for.cond394.preheader
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unreachable
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for.body409: ; preds = %for.inc558, %for.body409.lr.ph
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%k.029 = phi i32 [ 1, %for.body409.lr.ph ], [ %inc559, %for.inc558 ]
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br i1 undef, label %if.then412, label %if.else433
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if.then412: ; preds = %for.body409
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br label %if.end440
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if.else433: ; preds = %for.body409
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br label %if.end440
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if.end440: ; preds = %if.else433, %if.then412
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br i1 undef, label %for.inc558, label %if.end461
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if.end461: ; preds = %if.end440
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.body517: ; preds = %for.body517, %if.end461
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.cond528.loopexit: ; preds = %for.body517, %if.end461
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br label %for.inc558
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for.inc558: ; preds = %for.cond528.loopexit, %if.end440
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%inc559 = add nsw i32 %k.029, 1
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%cmp407 = icmp sgt i32 %inc559, undef
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br i1 %cmp407, label %for.cond246.outer, label %for.body409
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for.end562: ; preds = %if.end250, %for.cond246
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unreachable
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for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
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unreachable
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}
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define void @test2() nounwind uwtable ssp {
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entry:
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br i1 undef, label %for.end, label %for.body
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for.body: ; preds = %for.body, %entry
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br i1 undef, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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br i1 undef, label %for.end11, label %for.body3
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for.body3: ; preds = %for.end
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unreachable
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for.end11: ; preds = %for.end
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br i1 undef, label %while.body, label %while.end
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while.body: ; preds = %for.end11
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unreachable
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while.end: ; preds = %for.end11
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br i1 undef, label %if.end115, label %for.cond109
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for.cond109: ; preds = %while.end
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unreachable
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if.end115: ; preds = %while.end
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br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
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while.body119.lr.ph.lr.ph: ; preds = %if.end115
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br i1 undef, label %for.cond612, label %if.end123.us
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if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
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br label %for.cond132.us
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for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
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br i1 undef, label %if.then136.us, label %for.cond132.us
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if.then136.us: ; preds = %for.cond132.us
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br i1 undef, label %while.end220, label %while.body211
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while.body211: ; preds = %while.body211, %if.then136.us
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br i1 undef, label %while.end220, label %while.body211
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while.end220: ; preds = %while.body211, %if.then136.us
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br label %for.cond246.outer
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for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
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br label %for.cond246
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for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
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br i1 undef, label %for.end562, label %if.end250
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if.end250: ; preds = %for.cond246
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br i1 undef, label %if.end256, label %for.end562
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if.end256: ; preds = %if.end250
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%0 = load i32* undef, align 4
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br i1 undef, label %if.then274, label %for.cond404.preheader
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for.cond404.preheader: ; preds = %if.end256
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%add406 = add i32 0, %0
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br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
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for.body409.lr.ph: ; preds = %for.cond404.preheader
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br label %for.body409
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if.then274: ; preds = %if.end256
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br i1 undef, label %for.cond246.outer, label %if.end309
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if.end309: ; preds = %if.then274
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.body361: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.cond372.loopexit: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond394.preheader, label %for.cond246
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for.cond394.preheader: ; preds = %for.cond372.loopexit
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br i1 undef, label %for.cond246.outer, label %for.body397
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for.body397: ; preds = %for.cond394.preheader
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unreachable
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for.body409: ; preds = %for.inc558, %for.body409.lr.ph
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%k.029 = phi i32 [ 1, %for.body409.lr.ph ], [ %inc559, %for.inc558 ]
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br i1 undef, label %if.then412, label %if.else433
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if.then412: ; preds = %for.body409
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br label %if.end440
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if.else433: ; preds = %for.body409
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br label %if.end440
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if.end440: ; preds = %if.else433, %if.then412
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br i1 undef, label %for.inc558, label %if.end461
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if.end461: ; preds = %if.end440
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.body517: ; preds = %for.body517, %if.end461
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.cond528.loopexit: ; preds = %for.body517, %if.end461
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br label %for.inc558
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for.inc558: ; preds = %for.cond528.loopexit, %if.end440
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%inc559 = add nsw i32 %k.029, 1
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%cmp407 = icmp sgt i32 %inc559, %add406
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br i1 %cmp407, label %for.cond246.outer, label %for.body409
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for.end562: ; preds = %if.end250, %for.cond246
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unreachable
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for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
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unreachable
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}
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define void @test3() nounwind uwtable ssp {
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entry:
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br i1 undef, label %for.end, label %for.body
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for.body: ; preds = %for.body, %entry
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br i1 undef, label %for.end, label %for.body
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for.end: ; preds = %for.body, %entry
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br i1 undef, label %for.end11, label %for.body3
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for.body3: ; preds = %for.end
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unreachable
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for.end11: ; preds = %for.end
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br i1 undef, label %while.body, label %while.end
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while.body: ; preds = %for.end11
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unreachable
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while.end: ; preds = %for.end11
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br i1 undef, label %if.end115, label %for.cond109
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for.cond109: ; preds = %while.end
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unreachable
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if.end115: ; preds = %while.end
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br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
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while.body119.lr.ph.lr.ph: ; preds = %if.end115
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br i1 undef, label %for.cond612, label %if.end123.us
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if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
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br label %for.cond132.us
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for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
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br i1 undef, label %if.then136.us, label %for.cond132.us
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if.then136.us: ; preds = %for.cond132.us
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br i1 undef, label %while.end220, label %while.body211
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while.body211: ; preds = %while.body211, %if.then136.us
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br i1 undef, label %while.end220, label %while.body211
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while.end220: ; preds = %while.body211, %if.then136.us
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br label %for.cond246.outer
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for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
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br label %for.cond246
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for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
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br i1 undef, label %for.end562, label %if.end250
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if.end250: ; preds = %for.cond246
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br i1 undef, label %if.end256, label %for.end562
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if.end256: ; preds = %if.end250
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br i1 undef, label %if.then274, label %for.cond404.preheader
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for.cond404.preheader: ; preds = %if.end256
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br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
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for.body409.lr.ph: ; preds = %for.cond404.preheader
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br label %for.body409
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if.then274: ; preds = %if.end256
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br i1 undef, label %for.cond246.outer, label %if.end309
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if.end309: ; preds = %if.then274
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.body361: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond372.loopexit, label %for.body361
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for.cond372.loopexit: ; preds = %for.body361, %if.end309
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br i1 undef, label %for.cond394.preheader, label %for.cond246
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for.cond394.preheader: ; preds = %for.cond372.loopexit
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br i1 undef, label %for.cond246.outer, label %for.body397
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for.body397: ; preds = %for.cond394.preheader
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unreachable
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for.body409: ; preds = %for.inc558, %for.body409.lr.ph
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br i1 undef, label %if.then412, label %if.else433
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if.then412: ; preds = %for.body409
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br label %if.end440
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if.else433: ; preds = %for.body409
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br label %if.end440
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if.end440: ; preds = %if.else433, %if.then412
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br i1 undef, label %for.inc558, label %if.end461
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if.end461: ; preds = %if.end440
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.body517: ; preds = %for.body517, %if.end461
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br i1 undef, label %for.cond528.loopexit, label %for.body517
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for.cond528.loopexit: ; preds = %for.body517, %if.end461
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br label %for.inc558
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for.inc558: ; preds = %for.cond528.loopexit, %if.end440
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br i1 undef, label %for.cond246.outer, label %for.body409
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for.end562: ; preds = %if.end250, %for.cond246
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unreachable
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for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
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unreachable
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}
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define void @test4() nounwind uwtable ssp {
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entry:
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br i1 undef, label %if.end8, label %if.else
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if.else: ; preds = %entry
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br label %if.end8
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if.end8: ; preds = %if.else, %entry
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br i1 undef, label %if.end26, label %if.else22
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if.else22: ; preds = %if.end8
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br label %if.end26
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if.end26: ; preds = %if.else22, %if.end8
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br i1 undef, label %if.end35, label %if.else31
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if.else31: ; preds = %if.end26
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br label %if.end35
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if.end35: ; preds = %if.else31, %if.end26
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br i1 undef, label %for.end226, label %for.body.lr.ph
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for.body.lr.ph: ; preds = %if.end35
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br label %for.body48
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for.body48: ; preds = %for.inc221, %for.body.lr.ph
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br i1 undef, label %for.inc221, label %for.body65.lr.ph
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for.body65.lr.ph: ; preds = %for.body48
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%0 = load i32* undef, align 4
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br label %for.body65.us
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for.body65.us: ; preds = %for.inc219.us, %for.body65.lr.ph
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%k.09.us = phi i32 [ %inc.us, %for.inc219.us ], [ 1, %for.body65.lr.ph ]
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%idxprom66.us = sext i32 %k.09.us to i64
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br i1 undef, label %for.inc219.us, label %if.end72.us
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if.end72.us: ; preds = %for.body65.us
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br i1 undef, label %if.end93.us, label %if.then76.us
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if.then76.us: ; preds = %if.end72.us
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br label %if.end93.us
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if.end93.us: ; preds = %if.then76.us, %if.end72.us
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br i1 undef, label %if.end110.us, label %for.inc219.us
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if.end110.us: ; preds = %if.end93.us
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br i1 undef, label %for.inc219.us, label %for.body142.us
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for.body142.us: ; preds = %for.cond139.loopexit.us, %if.end110.us
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br label %for.cond152.us
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for.cond152.us: ; preds = %for.cond152.us, %for.body142.us
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br i1 undef, label %for.cond139.loopexit.us, label %for.cond152.us
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for.inc219.us: ; preds = %for.cond139.loopexit.us, %if.end110.us, %if.end93.us, %for.body65.us
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%inc.us = add nsw i32 %k.09.us, 1
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%cmp64.us = icmp sgt i32 %inc.us, %0
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br i1 %cmp64.us, label %for.inc221, label %for.body65.us
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for.cond139.loopexit.us: ; preds = %for.cond152.us
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br i1 undef, label %for.inc219.us, label %for.body142.us
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for.inc221: ; preds = %for.inc219.us, %for.body48
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br label %for.body48
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|
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for.end226: ; preds = %if.end35
|
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ret void
|
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}
|