Test Failure: Transforms/SLPVectorizer/vectorizable-functions.ll

Test source: git

Comments: Alive2: no support for "vector-function-abi-variant"

Log:

Source: /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll
-- 1. ModuleToFunctionPassAdaptor
-- 1. PassManager<Function> : Skipping NOP
-- 2. SLPVectorizerPass

----------------------------------------
declare float @memread(float) NNaN nofree willreturn memory(read)

define <4 x float> @memread_4x(ptr %a) {
entry:
  %#0 = load <4 x float>, ptr %a, align 16
  %vecext = extractelement <4 x float> %#0, i32 0
  %#1 = call float @memread(float %vecext) NNaN nofree willreturn memory(read)
  %vecins = insertelement <4 x float> undef, float %#1, i32 0
  %vecext.1 = extractelement <4 x float> %#0, i32 1
  %#2 = call float @memread(float %vecext.1) NNaN nofree willreturn memory(read)
  %vecins.1 = insertelement <4 x float> %vecins, float %#2, i32 1
  %vecext.2 = extractelement <4 x float> %#0, i32 2
  %#3 = call float @memread(float %vecext.2) NNaN nofree willreturn memory(read)
  %vecins.2 = insertelement <4 x float> %vecins.1, float %#3, i32 2
  %vecext.3 = extractelement <4 x float> %#0, i32 3
  %#4 = call float @memread(float %vecext.3) NNaN nofree willreturn memory(read)
  %vecins.3 = insertelement <4 x float> %vecins.2, float %#4, i32 3
  ret <4 x float> %vecins.3
}
Transformation seems to be correct! (syntactically equal)

-- 3. SLPVectorizerPass

----------------------------------------
declare float @memread(float) NNaN nofree willreturn memory(read)

define <4 x float> @memread_4x(ptr %a) {
entry:
  %#0 = load <4 x float>, ptr %a, align 16
  %vecext = extractelement <4 x float> %#0, i32 0
  %#1 = call float @memread(float %vecext) NNaN nofree willreturn memory(read)
  %vecins = insertelement <4 x float> undef, float %#1, i32 0
  %vecext.1 = extractelement <4 x float> %#0, i32 1
  %#2 = call float @memread(float %vecext.1) NNaN nofree willreturn memory(read)
  %vecins.1 = insertelement <4 x float> %vecins, float %#2, i32 1
  %vecext.2 = extractelement <4 x float> %#0, i32 2
  %#3 = call float @memread(float %vecext.2) NNaN nofree willreturn memory(read)
  %vecins.2 = insertelement <4 x float> %vecins.1, float %#3, i32 2
  %vecext.3 = extractelement <4 x float> %#0, i32 3
  %#4 = call float @memread(float %vecext.3) NNaN nofree willreturn memory(read)
  %vecins.3 = insertelement <4 x float> %vecins.2, float %#4, i32 3
  ret <4 x float> %vecins.3
}
=>
declare <4 x float> @vmemread(<4 x float>) NNaN

define <4 x float> @memread_4x(ptr %a) {
entry:
  %#0 = load <4 x float>, ptr %a, align 16
  %#1 = call <4 x float> @vmemread(<4 x float> %#0) NNaN
  ret <4 x float> %#1
}
Transformation doesn't verify! (unsound)
ERROR: Source is more defined than target

Example:
ptr %a = pointer(non-local, block_id=1, offset=0)

Source:
<4 x float> %#0 = < poison, poison, poison, poison >
float %vecext = poison
float %#1 = #x00000000 (+0.0)
<4 x float> %vecins = < #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0) >
float %vecext.1 = poison
float %#2 = #x00000000 (+0.0)
<4 x float> %vecins.1 = < #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0) >
float %vecext.2 = poison
float %#3 = #x00000000 (+0.0)
<4 x float> %vecins.2 = < #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0) >
float %vecext.3 = poison
float %#4 = #x00000000 (+0.0)
<4 x float> %vecins.3 = < #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0), #x00000000 (+0.0) >

SOURCE MEMORY STATE
===================
NON-LOCAL BLOCKS:
Block 0 >	size: 0	align: 8	alloc type: 0	alive: false	address: 0
Block 1 >	size: 128	align: 1	alloc type: 0	alive: true	address: 16
Block 2 >	size: 1	align: 8	alloc type: 0	alive: true

Target:
<4 x float> %#0 = < poison, poison, poison, poison >
Function @vmemread triggered UB


Pass: SLPVectorizerPass
Command line: '/home/nlopes/llvm/build/bin/opt' '-load=/home/nlopes/alive2/build/tv/tv.so' '-load-pass-plugin=/home/nlopes/alive2/build/tv/tv.so' '-tv-exit-on-error' '-passes=slp-vectorizer' '-S' '/bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll' '-tv-smt-to=20000' '-tv-report-dir=/home/nlopes/alive2/build/logs' '-tv-smt-stats'
Wrote bitcode to: "/home/nlopes/alive2/build/logs/vectorizable-functions_9x2CYjeR_ub9T.bc"


------------------- SMT STATS -------------------
Num queries: 41
Num invalid: 0
Num skips:   0
Num trivial: 21 (33.9%)
Num timeout: 0 (0.0%)
Num errors:  0 (0.0%)
Num SAT:     31 (75.6%)
Num UNSAT:   10 (24.4%)
Alive2: Transform doesn't verify; aborting!

stderr:

RUN: at line 2: /home/nlopes/alive2/build/opt-alive.sh -passes=slp-vectorizer -S /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll | /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll
+ /home/nlopes/alive2/build/opt-alive.sh -passes=slp-vectorizer -S /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll
+ /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll

FileCheck error: '<stdin>' is empty.
FileCheck command line:  /bitbucket/nlopes/llvm/build/bin/FileCheck /bitbucket/nlopes/llvm/llvm/test/Transforms/SLPVectorizer/vectorizable-functions.ll

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