Arnold Schwaighofer 06413cd0f0 LoopVectorizer: Add a check that the backedge taken count + 1 does not overflow ...

The loop vectorizer instantiates be-taken-count + 1 as the loop iteration count.
If this expression overflows the generated code was invalid.

In case of overflow the code now jumps to the scalar loop.

Fixes PR17288.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@209854 91177308-0d34-0410-b5e6-96231b3b80d8

2014-05-29 22:10:01 +00:00

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AArch64

AArch64/ARM64: move ARM64 into AArch64's place

2014-05-24 12:50:23 +00:00

ARM

LoopVectorizer: Enable unrolling of conditional stores and the load/store

2014-02-02 03:12:34 +00:00

PowerPC

[LoopVectorizer] Count dependencies of consecutive pointers as uniforms

2014-04-02 02:34:49 +00:00

X86

Move late partial-unrolling thresholds into the processor definitions

2014-05-08 09:14:44 +00:00

XCore

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12-12-11-if-conv.ll

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2012-10-20-infloop.ll

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2012-10-22-isconsec.ll

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align.ll

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bsd_regex.ll

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bzip_reverse_loops.ll

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calloc.ll

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cast-induction.ll

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cpp-new-array.ll

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dbg.value.ll

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debugloc.ll

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ee-crash.ll

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flags.ll

LoopVectorizer: Preserve fast-math flags

2014-03-05 21:10:47 +00:00

float-reduction.ll

LoopVectorizer: Preserve fast-math flags

2014-03-05 21:10:47 +00:00

funcall.ll

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gcc-examples.ll

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global_alias.ll

InstCombine: Teach most integer add/sub/mul/div combines how to deal with vectors.

2014-01-19 15:24:22 +00:00

hoist-loads.ll

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i8-induction.ll

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if-conv-crash.ll

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if-conversion-edgemasks.ll

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if-conversion-nest.ll

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if-conversion-reduction.ll

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if-conversion.ll

LoopVectorizer: Don't if-convert constant expressions that can trap

2013-12-17 01:11:01 +00:00

if-pred-stores.ll

LoopVectorizer: Keep track of conditional store basic blocks

2014-02-08 20:41:13 +00:00

increment.ll

Correct word hyphenations

2013-12-05 05:44:44 +00:00

induction_plus.ll

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induction.ll

LoopVectorizer: Add a check that the backedge taken count + 1 does not overflow

2014-05-29 22:10:01 +00:00

infiniteloop.ll

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intrinsic.ll

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lcssa-crash.ll

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lifetime.ll

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memdep.ll

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metadata-unroll.ll

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metadata-width.ll

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minmax_reduction.ll

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multi-use-reduction-bug.ll

LoopVectorizer: A reduction that has multiple uses of the reduction value is not

2014-01-19 03:18:31 +00:00

multiple-address-spaces.ll

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no_idiv_reduction.ll

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no_int_induction.ll

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no_outside_user.ll

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nofloat.ll

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non-const-n.ll

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nsw-crash.ll

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opt.ll

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phi-hang.ll

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ptr_loops.ll

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read-only.ll

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reduction.ll

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reverse_induction.ll

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reverse_iter.ll

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runtime-check-address-space.ll

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runtime-check-readonly-address-space.ll

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runtime-check-readonly.ll

LoopVectorizer: Add a check that the backedge taken count + 1 does not overflow

2014-05-29 22:10:01 +00:00

runtime-check.ll

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runtime-limit.ll

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safegep.ll

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same-base-access.ll

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scalar-select.ll

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scev-exitlim-crash.ll

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simple-unroll.ll

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small-loop.ll

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start-non-zero.ll

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store-shuffle-bug.ll

Reorder shuffle and binary operation.

2014-05-11 08:46:12 +00:00

struct_access.ll

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undef-inst-bug.ll

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unroll_novec.ll

[vectorizer] Add an override for the target instruction cost and use it

2014-01-27 11:41:50 +00:00

value-ptr-bug.ll

Fix known typos

2014-01-24 17:20:08 +00:00

vect.omp.persistence.ll

vect.omp.persistence.ll REQUIRES asserts due to -debug-only.

2014-04-15 10:12:47 +00:00

vect.stats.ll

[CLNUP] Test commit. Remove newline.

2014-04-24 08:42:58 +00:00

vectorize-once.ll

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version-mem-access.ll

LoopVectorize: Only strip casts from integer types when replacing symbolic

2014-01-15 03:35:46 +00:00

write-only.ll

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