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9298d3a7d3
We can have AddRec with loops having many predecessors. This changes an assert to an early return. Differential Revision: https://reviews.llvm.org/D48766 llvm-svn: 335965
128 lines
5.7 KiB
LLVM
128 lines
5.7 KiB
LLVM
; RUN: opt < %s -analyze -scalar-evolution | FileCheck %s
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; Check that isImpliedViaMerge wouldn't crash when trying to prove
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; SCEVUnknown and AddRec with phi having many inputs
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; CHECK: @foo
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define void @foo(i1 %cond) {
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osr.type.merge79:
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br label %bci_329
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bci_329: ; preds = %bci_337, %bci_326, %osr.type.merge79
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%local_7_ = phi i32 [ 0, %osr.type.merge79 ], [ %local_7_113, %bci_326 ], [ %local_7_, %bci_337 ]
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br i1 %cond, label %bci_360, label %bci_337
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bci_360: ; preds = %bci_329
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%0 = phi i32 [ %local_7_, %bci_329 ]
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%1 = icmp sge i32 %0, 451
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br i1 %1, label %bci_371, label %bci_326
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bci_371: ; preds = %bci_304, %bci_360
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%local_2_132 = phi i32 [ 0, %bci_360 ], [ %local_2_188, %bci_304 ]
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%local_7_137 = phi i32 [ 0, %bci_360 ], [ %local_7_217, %bci_304 ]
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%local_8_138 = phi i32 [ 0, %bci_360 ], [ %local_8_194, %bci_304 ]
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%local_11_141 = phi i32 [ 0, %bci_360 ], [ %local_11_197, %bci_304 ]
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%2 = phi i1 [ %1, %bci_360 ], [ false, %bci_304 ]
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br i1 %2, label %bci_562, label %never_deopt
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bci_562: ; preds = %done437, %done405, %done395, %bci_407, %not_zero322, %bci_221, %bci_371
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%local_2_164 = phi i32 [ %local_2_132, %bci_371 ], [ %9, %not_zero322 ], [ %local_2_188, %bci_407 ], [ %result396, %done395 ], [ %local_2_188, %bci_221 ], [ %local_2_188, %done405 ], [ %local_2_188, %done437 ]
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%local_7_169 = phi i32 [ %local_7_137, %bci_371 ], [ %local_7_217, %not_zero322 ], [ %local_7_217, %bci_407 ], [ %local_7_217, %done395 ], [ %local_7_217, %bci_221 ], [ %local_7_217, %done405 ], [ %local_7_217, %done437 ]
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%local_8_170 = phi i32 [ %local_8_138, %bci_371 ], [ %local_8_194, %not_zero322 ], [ %local_8_194, %bci_407 ], [ %local_8_194, %done395 ], [ %local_8_194, %bci_221 ], [ %local_8_194, %done405 ], [ %local_8_194, %done437 ]
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%local_11_173 = phi i32 [ %local_11_141, %bci_371 ], [ %local_11_197, %not_zero322 ], [ %local_11_197, %bci_407 ], [ %local_11_197, %done395 ], [ %local_11_197, %bci_221 ], [ %local_11_197, %done405 ], [ %local_11_197, %done437 ]
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br label %bci_604
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bci_604: ; preds = %not_subtype, %bci_565, %bci_562
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%local_2_188 = phi i32 [ %local_2_164, %bci_562 ], [ %9, %bci_565 ], [ %9, %not_subtype ]
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%local_7_193 = phi i32 [ %local_7_169, %bci_562 ], [ %local_7_217, %bci_565 ], [ %local_7_217, %not_subtype ]
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%local_8_194 = phi i32 [ %local_8_170, %bci_562 ], [ %local_8_194, %bci_565 ], [ %local_8_194, %not_subtype ]
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%local_11_197 = phi i32 [ %local_11_173, %bci_562 ], [ %local_11_197, %bci_565 ], [ %local_11_197, %not_subtype ]
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%3 = add i32 1, %local_7_193
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br label %bci_199
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bci_199: ; preds = %bci_591, %bci_604
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%local_7_217 = phi i32 [ %3, %bci_604 ], [ %6, %bci_591 ]
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%4 = mul i32 %local_2_188, %local_8_194
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%5 = icmp sge i32 %local_7_217, %4
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br i1 %5, label %bci_610, label %bci_216
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bci_610: ; preds = %bci_199
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ret void
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bci_216: ; preds = %bci_199
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br i1 %cond, label %bci_591, label %bci_221
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bci_591: ; preds = %bci_216
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%6 = add i32 1, %local_7_217
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br label %bci_199
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bci_221: ; preds = %bci_216
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%7 = srem i32 %local_7_217, 6
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%8 = add i32 %7, 114
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switch i32 %8, label %done405 [
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i32 114, label %bci_562
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i32 116, label %bci_304
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i32 117, label %bci_395
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i32 118, label %bci_407
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i32 119, label %bci_419
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]
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bci_419: ; preds = %bci_221
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%9 = sub i32 %local_2_188, %local_11_197
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br label %bci_435
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bci_435: ; preds = %not_zero322, %bci_419
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br i1 %cond, label %not_zero265, label %never_deopt
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not_zero265: ; preds = %bci_435
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br i1 %cond, label %in_bounds, label %out_of_bounds
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in_bounds: ; preds = %not_zero265
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br i1 %cond, label %not_zero322, label %never_deopt
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not_zero322: ; preds = %in_bounds
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br i1 %cond, label %bci_562, label %bci_435
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bci_407: ; preds = %bci_221
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br label %bci_562
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bci_395: ; preds = %bci_221
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br i1 %cond, label %done395, label %general_case394
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general_case394: ; preds = %bci_395
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%10 = srem i32 %local_2_188, 0
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br label %done395
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done395: ; preds = %general_case394, %bci_395
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%result396 = phi i32 [ %10, %general_case394 ], [ 0, %bci_395 ]
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br label %bci_562
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bci_304: ; preds = %bci_221
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br i1 %cond, label %bci_371, label %bci_326
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done405: ; preds = %bci_221
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br i1 %cond, label %bci_562, label %done437
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done437: ; preds = %done405
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br label %bci_562
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bci_326: ; preds = %bci_304, %bci_360
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%local_7_113 = phi i32 [ %local_7_, %bci_360 ], [ %local_7_217, %bci_304 ]
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br label %bci_329
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bci_337: ; preds = %bci_329
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br label %bci_329
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never_deopt: ; preds = %in_bounds, %bci_435, %bci_371
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ret void
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out_of_bounds: ; preds = %not_zero265
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br i1 %cond, label %bci_565, label %not_subtype
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bci_565: ; preds = %out_of_bounds
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br label %bci_604
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not_subtype: ; preds = %out_of_bounds
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br label %bci_604
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}
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