mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-10-31 16:02:52 +01:00
f1e6d84f01
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. llvm-svn: 166787
422 lines
17 KiB
LLVM
422 lines
17 KiB
LLVM
; RUN: opt < %s -S -indvars -verify-scev
|
|
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-apple-macosx10.8.0"
|
|
|
|
define void @test1() nounwind uwtable ssp {
|
|
entry:
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
br i1 false, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
br i1 undef, label %for.end11, label %for.body3
|
|
|
|
for.body3: ; preds = %for.end
|
|
unreachable
|
|
|
|
for.end11: ; preds = %for.end
|
|
br i1 undef, label %while.body, label %while.end
|
|
|
|
while.body: ; preds = %for.end11
|
|
unreachable
|
|
|
|
while.end: ; preds = %for.end11
|
|
br i1 undef, label %if.end115, label %for.cond109
|
|
|
|
for.cond109: ; preds = %while.end
|
|
unreachable
|
|
|
|
if.end115: ; preds = %while.end
|
|
br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
|
|
|
|
while.body119.lr.ph.lr.ph: ; preds = %if.end115
|
|
br i1 undef, label %for.cond612, label %if.end123.us
|
|
|
|
if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
|
|
br label %for.cond132.us
|
|
|
|
for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
|
|
br i1 undef, label %if.then136.us, label %for.cond132.us
|
|
|
|
if.then136.us: ; preds = %for.cond132.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.body211: ; preds = %while.body211, %if.then136.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.end220: ; preds = %while.body211, %if.then136.us
|
|
br label %for.cond246.outer
|
|
|
|
for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
|
|
br label %for.cond246
|
|
|
|
for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
|
|
br i1 undef, label %for.end562, label %if.end250
|
|
|
|
if.end250: ; preds = %for.cond246
|
|
br i1 undef, label %if.end256, label %for.end562
|
|
|
|
if.end256: ; preds = %if.end250
|
|
%cmp272 = icmp eq i32 undef, undef
|
|
br i1 %cmp272, label %if.then274, label %for.cond404.preheader
|
|
|
|
for.cond404.preheader: ; preds = %if.end256
|
|
br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
|
|
|
|
for.body409.lr.ph: ; preds = %for.cond404.preheader
|
|
br label %for.body409
|
|
|
|
if.then274: ; preds = %if.end256
|
|
br i1 undef, label %for.cond246.outer, label %if.end309
|
|
|
|
if.end309: ; preds = %if.then274
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.body361: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.cond372.loopexit: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond394.preheader, label %for.cond246
|
|
|
|
for.cond394.preheader: ; preds = %for.cond372.loopexit
|
|
br i1 undef, label %for.cond246.outer, label %for.body397
|
|
|
|
for.body397: ; preds = %for.cond394.preheader
|
|
unreachable
|
|
|
|
for.body409: ; preds = %for.inc558, %for.body409.lr.ph
|
|
%k.029 = phi i32 [ 1, %for.body409.lr.ph ], [ %inc559, %for.inc558 ]
|
|
br i1 undef, label %if.then412, label %if.else433
|
|
|
|
if.then412: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.else433: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.end440: ; preds = %if.else433, %if.then412
|
|
br i1 undef, label %for.inc558, label %if.end461
|
|
|
|
if.end461: ; preds = %if.end440
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.body517: ; preds = %for.body517, %if.end461
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.cond528.loopexit: ; preds = %for.body517, %if.end461
|
|
br label %for.inc558
|
|
|
|
for.inc558: ; preds = %for.cond528.loopexit, %if.end440
|
|
%inc559 = add nsw i32 %k.029, 1
|
|
%cmp407 = icmp sgt i32 %inc559, undef
|
|
br i1 %cmp407, label %for.cond246.outer, label %for.body409
|
|
|
|
for.end562: ; preds = %if.end250, %for.cond246
|
|
unreachable
|
|
|
|
for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
|
|
unreachable
|
|
}
|
|
|
|
define void @test2() nounwind uwtable ssp {
|
|
entry:
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
br i1 undef, label %for.end11, label %for.body3
|
|
|
|
for.body3: ; preds = %for.end
|
|
unreachable
|
|
|
|
for.end11: ; preds = %for.end
|
|
br i1 undef, label %while.body, label %while.end
|
|
|
|
while.body: ; preds = %for.end11
|
|
unreachable
|
|
|
|
while.end: ; preds = %for.end11
|
|
br i1 undef, label %if.end115, label %for.cond109
|
|
|
|
for.cond109: ; preds = %while.end
|
|
unreachable
|
|
|
|
if.end115: ; preds = %while.end
|
|
br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
|
|
|
|
while.body119.lr.ph.lr.ph: ; preds = %if.end115
|
|
br i1 undef, label %for.cond612, label %if.end123.us
|
|
|
|
if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
|
|
br label %for.cond132.us
|
|
|
|
for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
|
|
br i1 undef, label %if.then136.us, label %for.cond132.us
|
|
|
|
if.then136.us: ; preds = %for.cond132.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.body211: ; preds = %while.body211, %if.then136.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.end220: ; preds = %while.body211, %if.then136.us
|
|
br label %for.cond246.outer
|
|
|
|
for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
|
|
br label %for.cond246
|
|
|
|
for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
|
|
br i1 undef, label %for.end562, label %if.end250
|
|
|
|
if.end250: ; preds = %for.cond246
|
|
br i1 undef, label %if.end256, label %for.end562
|
|
|
|
if.end256: ; preds = %if.end250
|
|
%0 = load i32* undef, align 4
|
|
br i1 undef, label %if.then274, label %for.cond404.preheader
|
|
|
|
for.cond404.preheader: ; preds = %if.end256
|
|
%add406 = add i32 0, %0
|
|
br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
|
|
|
|
for.body409.lr.ph: ; preds = %for.cond404.preheader
|
|
br label %for.body409
|
|
|
|
if.then274: ; preds = %if.end256
|
|
br i1 undef, label %for.cond246.outer, label %if.end309
|
|
|
|
if.end309: ; preds = %if.then274
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.body361: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.cond372.loopexit: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond394.preheader, label %for.cond246
|
|
|
|
for.cond394.preheader: ; preds = %for.cond372.loopexit
|
|
br i1 undef, label %for.cond246.outer, label %for.body397
|
|
|
|
for.body397: ; preds = %for.cond394.preheader
|
|
unreachable
|
|
|
|
for.body409: ; preds = %for.inc558, %for.body409.lr.ph
|
|
%k.029 = phi i32 [ 1, %for.body409.lr.ph ], [ %inc559, %for.inc558 ]
|
|
br i1 undef, label %if.then412, label %if.else433
|
|
|
|
if.then412: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.else433: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.end440: ; preds = %if.else433, %if.then412
|
|
br i1 undef, label %for.inc558, label %if.end461
|
|
|
|
if.end461: ; preds = %if.end440
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.body517: ; preds = %for.body517, %if.end461
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.cond528.loopexit: ; preds = %for.body517, %if.end461
|
|
br label %for.inc558
|
|
|
|
for.inc558: ; preds = %for.cond528.loopexit, %if.end440
|
|
%inc559 = add nsw i32 %k.029, 1
|
|
%cmp407 = icmp sgt i32 %inc559, %add406
|
|
br i1 %cmp407, label %for.cond246.outer, label %for.body409
|
|
|
|
for.end562: ; preds = %if.end250, %for.cond246
|
|
unreachable
|
|
|
|
for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
|
|
unreachable
|
|
}
|
|
|
|
define void @test3() nounwind uwtable ssp {
|
|
entry:
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.body: ; preds = %for.body, %entry
|
|
br i1 undef, label %for.end, label %for.body
|
|
|
|
for.end: ; preds = %for.body, %entry
|
|
br i1 undef, label %for.end11, label %for.body3
|
|
|
|
for.body3: ; preds = %for.end
|
|
unreachable
|
|
|
|
for.end11: ; preds = %for.end
|
|
br i1 undef, label %while.body, label %while.end
|
|
|
|
while.body: ; preds = %for.end11
|
|
unreachable
|
|
|
|
while.end: ; preds = %for.end11
|
|
br i1 undef, label %if.end115, label %for.cond109
|
|
|
|
for.cond109: ; preds = %while.end
|
|
unreachable
|
|
|
|
if.end115: ; preds = %while.end
|
|
br i1 undef, label %while.body119.lr.ph.lr.ph, label %for.cond612
|
|
|
|
while.body119.lr.ph.lr.ph: ; preds = %if.end115
|
|
br i1 undef, label %for.cond612, label %if.end123.us
|
|
|
|
if.end123.us: ; preds = %while.body119.lr.ph.lr.ph
|
|
br label %for.cond132.us
|
|
|
|
for.cond132.us: ; preds = %for.cond132.us, %if.end123.us
|
|
br i1 undef, label %if.then136.us, label %for.cond132.us
|
|
|
|
if.then136.us: ; preds = %for.cond132.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.body211: ; preds = %while.body211, %if.then136.us
|
|
br i1 undef, label %while.end220, label %while.body211
|
|
|
|
while.end220: ; preds = %while.body211, %if.then136.us
|
|
br label %for.cond246.outer
|
|
|
|
for.cond246.outer: ; preds = %for.inc558, %for.cond394.preheader, %if.then274, %for.cond404.preheader, %while.end220
|
|
br label %for.cond246
|
|
|
|
for.cond246: ; preds = %for.cond372.loopexit, %for.cond246.outer
|
|
br i1 undef, label %for.end562, label %if.end250
|
|
|
|
if.end250: ; preds = %for.cond246
|
|
br i1 undef, label %if.end256, label %for.end562
|
|
|
|
if.end256: ; preds = %if.end250
|
|
br i1 undef, label %if.then274, label %for.cond404.preheader
|
|
|
|
for.cond404.preheader: ; preds = %if.end256
|
|
br i1 undef, label %for.cond246.outer, label %for.body409.lr.ph
|
|
|
|
for.body409.lr.ph: ; preds = %for.cond404.preheader
|
|
br label %for.body409
|
|
|
|
if.then274: ; preds = %if.end256
|
|
br i1 undef, label %for.cond246.outer, label %if.end309
|
|
|
|
if.end309: ; preds = %if.then274
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.body361: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond372.loopexit, label %for.body361
|
|
|
|
for.cond372.loopexit: ; preds = %for.body361, %if.end309
|
|
br i1 undef, label %for.cond394.preheader, label %for.cond246
|
|
|
|
for.cond394.preheader: ; preds = %for.cond372.loopexit
|
|
br i1 undef, label %for.cond246.outer, label %for.body397
|
|
|
|
for.body397: ; preds = %for.cond394.preheader
|
|
unreachable
|
|
|
|
for.body409: ; preds = %for.inc558, %for.body409.lr.ph
|
|
br i1 undef, label %if.then412, label %if.else433
|
|
|
|
if.then412: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.else433: ; preds = %for.body409
|
|
br label %if.end440
|
|
|
|
if.end440: ; preds = %if.else433, %if.then412
|
|
br i1 undef, label %for.inc558, label %if.end461
|
|
|
|
if.end461: ; preds = %if.end440
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.body517: ; preds = %for.body517, %if.end461
|
|
br i1 undef, label %for.cond528.loopexit, label %for.body517
|
|
|
|
for.cond528.loopexit: ; preds = %for.body517, %if.end461
|
|
br label %for.inc558
|
|
|
|
for.inc558: ; preds = %for.cond528.loopexit, %if.end440
|
|
br i1 undef, label %for.cond246.outer, label %for.body409
|
|
|
|
for.end562: ; preds = %if.end250, %for.cond246
|
|
unreachable
|
|
|
|
for.cond612: ; preds = %while.body119.lr.ph.lr.ph, %if.end115
|
|
unreachable
|
|
}
|
|
|
|
define void @test4() nounwind uwtable ssp {
|
|
entry:
|
|
br i1 undef, label %if.end8, label %if.else
|
|
|
|
if.else: ; preds = %entry
|
|
br label %if.end8
|
|
|
|
if.end8: ; preds = %if.else, %entry
|
|
br i1 undef, label %if.end26, label %if.else22
|
|
|
|
if.else22: ; preds = %if.end8
|
|
br label %if.end26
|
|
|
|
if.end26: ; preds = %if.else22, %if.end8
|
|
br i1 undef, label %if.end35, label %if.else31
|
|
|
|
if.else31: ; preds = %if.end26
|
|
br label %if.end35
|
|
|
|
if.end35: ; preds = %if.else31, %if.end26
|
|
br i1 undef, label %for.end226, label %for.body.lr.ph
|
|
|
|
for.body.lr.ph: ; preds = %if.end35
|
|
br label %for.body48
|
|
|
|
for.body48: ; preds = %for.inc221, %for.body.lr.ph
|
|
br i1 undef, label %for.inc221, label %for.body65.lr.ph
|
|
|
|
for.body65.lr.ph: ; preds = %for.body48
|
|
%0 = load i32* undef, align 4
|
|
br label %for.body65.us
|
|
|
|
for.body65.us: ; preds = %for.inc219.us, %for.body65.lr.ph
|
|
%k.09.us = phi i32 [ %inc.us, %for.inc219.us ], [ 1, %for.body65.lr.ph ]
|
|
%idxprom66.us = sext i32 %k.09.us to i64
|
|
br i1 undef, label %for.inc219.us, label %if.end72.us
|
|
|
|
if.end72.us: ; preds = %for.body65.us
|
|
br i1 undef, label %if.end93.us, label %if.then76.us
|
|
|
|
if.then76.us: ; preds = %if.end72.us
|
|
br label %if.end93.us
|
|
|
|
if.end93.us: ; preds = %if.then76.us, %if.end72.us
|
|
br i1 undef, label %if.end110.us, label %for.inc219.us
|
|
|
|
if.end110.us: ; preds = %if.end93.us
|
|
br i1 undef, label %for.inc219.us, label %for.body142.us
|
|
|
|
for.body142.us: ; preds = %for.cond139.loopexit.us, %if.end110.us
|
|
br label %for.cond152.us
|
|
|
|
for.cond152.us: ; preds = %for.cond152.us, %for.body142.us
|
|
br i1 undef, label %for.cond139.loopexit.us, label %for.cond152.us
|
|
|
|
for.inc219.us: ; preds = %for.cond139.loopexit.us, %if.end110.us, %if.end93.us, %for.body65.us
|
|
%inc.us = add nsw i32 %k.09.us, 1
|
|
%cmp64.us = icmp sgt i32 %inc.us, %0
|
|
br i1 %cmp64.us, label %for.inc221, label %for.body65.us
|
|
|
|
for.cond139.loopexit.us: ; preds = %for.cond152.us
|
|
br i1 undef, label %for.inc219.us, label %for.body142.us
|
|
|
|
for.inc221: ; preds = %for.inc219.us, %for.body48
|
|
br label %for.body48
|
|
|
|
for.end226: ; preds = %if.end35
|
|
ret void
|
|
}
|