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Verifier: Call verifyModule() from llc and opt

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Change `llc` and `opt` to run `verifyModule()`.  This ensures that we
check the full module before `FunctionPass::doInitialization()` ever
gets called (I was getting crashes in `DwarfDebug` instead of verifier
failures when testing a WIP patch that checks operands of compile
units).  In `opt`, also move up debug-info-stripping so that it still
runs before verification.

There was a fair bit of broken code that was sitting in tree.
Interestingly, some were cases of a `select` that referred to itself in
`-instcombine` tests (apparently an intermediate result).  I split them
off to `*-noverify.ll` tests with RUN lines like this:

    opt < %s -S -disable-verify -instcombine | opt -S | FileCheck %s

This avoids verifying the input file (so we can get the broken code into
`-instcombine), but still verifies the output with a second call to
`opt` (to verify that `-instcombine` will clean it up like it should).

llvm-svn: 233432
This commit is contained in:
Duncan P. N. Exon Smith 2015-03-27 22:04:28 +00:00
parent ce44007143
commit 7af4fb7b9f
18 changed files with 123 additions and 83 deletions
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4
test/Transforms/DeadStoreElimination/simple.ll
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@ -3,7 +3,7 @@ target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:1
declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
declare i8* @llvm.init.trampoline(i8*, i8*, i8*)
declare void @llvm.init.trampoline(i8*, i8*, i8*)
define void @test1(i32* %Q, i32* %P) {
%DEAD = load i32, i32* %Q
@ -132,7 +132,7 @@ define void @test11() {
%storage = alloca [10 x i8], align 16 ; <[10 x i8]*> [#uses=1]
; CHECK-NOT: alloca
%cast = getelementptr [10 x i8], [10 x i8]* %storage, i32 0, i32 0 ; <i8*> [#uses=1]
%tramp = call i8* @llvm.init.trampoline( i8* %cast, i8* bitcast (void ()* @test11f to i8*), i8* null ) ; <i8*> [#uses=1]
call void @llvm.init.trampoline( i8* %cast, i8* bitcast (void ()* @test11f to i8*), i8* null ) ; <i8*> [#uses=1]
; CHECK-NOT: trampoline
ret void
; CHECK: ret void

3
test/Transforms/GlobalOpt/blockaddress.ll
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@ -13,6 +13,9 @@ define void @f() {
}
define void @g() {
entry:
br label %here
; CHECK-LABEL: @g(
here:

12
test/Transforms/IndVarSimplify/2011-11-01-lftrptr.ll
View File

@ -31,7 +31,8 @@ loop:
br i1 %cmp, label %loop, label %exit
exit:
ret i8 %snext
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
; CHECK-LABEL: @testptrptr(
@ -56,7 +57,8 @@ loop:
br i1 %cmp, label %loop, label %exit
exit:
ret i8 %snext
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
; CHECK-LABEL: @testnullptrint(
@ -86,7 +88,8 @@ loop:
br i1 %cmp, label %loop, label %exit
exit:
ret i8 %snext
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
; CHECK-LABEL: @testptrint(
@ -116,7 +119,8 @@ loop:
br i1 %cmp, label %loop, label %exit
exit:
ret i8 %snext
%ret = phi i8 [0, %loopguard], [%snext, %loop]
ret i8 %ret
}
; IV and BECount have two different pointer types here.

2
test/Transforms/Inline/2003-09-22-PHINodeInlineFail.ll
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@ -9,7 +9,7 @@ LongJmpBlkPost:
ret i32 0
LongJmpBlkPre:
%i.3 = phi i32 [ 0, %entry ], [ 0, %entry ] ; <i32> [#uses=0]
%i.3 = phi i32 [ 0, %entry ]
%exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
cleanup
ret i32 0

2
test/Transforms/Inline/2003-09-22-PHINodesInExceptionDest.ll
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@ -9,7 +9,7 @@ Call2Invoke: ; preds = %entry
br label %exit
LongJmpBlkPre: ; preds = %Call2Invoke, %entry
%i.3 = phi i32 [ 0, %entry ], [ 0, %Call2Invoke ] ; <i32> [#uses=0]
%i.3 = phi i32 [ 0, %entry ]
%exn = landingpad {i8*, i32} personality i32 (...)* @__gxx_personality_v0
cleanup
br label %exit

12
test/Transforms/InstCombine/call-intrinsics.ll
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@ -3,17 +3,17 @@
@X = global i8 0 ; <i8*> [#uses=3]
@Y = global i8 12 ; <i8*> [#uses=2]
declare void @llvm.memmove.i32(i8*, i8*, i32, i32)
declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
declare void @llvm.memcpy.i32(i8*, i8*, i32, i32)
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1)
declare void @llvm.memset.i32(i8*, i8, i32, i32)
declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1)
define void @zero_byte_test() {
; These process zero bytes, so they are a noop.
call void @llvm.memmove.i32( i8* @X, i8* @Y, i32 0, i32 100 )
call void @llvm.memcpy.i32( i8* @X, i8* @Y, i32 0, i32 100 )
call void @llvm.memset.i32( i8* @X, i8 123, i32 0, i32 100 )
call void @llvm.memmove.p0i8.p0i8.i32( i8* @X, i8* @Y, i32 0, i32 128, i1 false )
call void @llvm.memcpy.p0i8.p0i8.i32( i8* @X, i8* @Y, i32 0, i32 128, i1 false )
call void @llvm.memset.p0i8.i32( i8* @X, i8 123, i32 0, i32 128, i1 false )
ret void
}

43
test/Transforms/InstCombine/objsize-noverify.ll Normal file
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@ -0,0 +1,43 @@
; Test objectsize bounds checking that won't verify until after -instcombine.
; RUN: opt < %s -disable-verify -instcombine -S | opt -S | FileCheck %s
; We need target data to get the sizes of the arrays and structures.
target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
declare i32 @llvm.objectsize.i32.p0i8(i8*, i1) nounwind readonly
; CHECK-LABEL: @PR13390(
define i32 @PR13390(i1 %bool, i8* %a) {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
xpto:
%select = select i1 %bool, i8* %select, i8* %a
%select2 = select i1 %bool, i8* %a, i8* %select2
%0 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select, i1 true)
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select2, i1 true)
%2 = add i32 %0, %1
; CHECK: ret i32 undef
ret i32 %2
return:
ret i32 42
}
; CHECK-LABEL: @PR13621(
define i32 @PR13621(i1 %bool) nounwind {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
; technically reachable, but this malformed IR may appear as a result of constant propagation
xpto:
%gep2 = getelementptr i8, i8* %gep, i32 1
%gep = getelementptr i8, i8* %gep2, i32 1
%o = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 true)
; CHECK: ret i32 undef
ret i32 %o
return:
ret i32 7
}

37
test/Transforms/InstCombine/objsize.ll
View File

@ -219,43 +219,6 @@ define i32 @test13(i8** %esc) {
ret i32 %1
}
; CHECK-LABEL: @PR13390(
define i32 @PR13390(i1 %bool, i8* %a) {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
xpto:
%select = select i1 %bool, i8* %select, i8* %a
%select2 = select i1 %bool, i8* %a, i8* %select2
%0 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select, i1 true)
%1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select2, i1 true)
%2 = add i32 %0, %1
; CHECK: ret i32 undef
ret i32 %2
return:
ret i32 42
}
; CHECK-LABEL: @PR13621(
define i32 @PR13621(i1 %bool) nounwind {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
; technically reachable, but this malformed IR may appear as a result of constant propagation
xpto:
%gep2 = getelementptr i8, i8* %gep, i32 1
%gep = getelementptr i8, i8* %gep2, i32 1
%o = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 true)
; CHECK: ret i32 undef
ret i32 %o
return:
ret i32 7
}
@globalalias = internal alias [60 x i8]* @a
; CHECK-LABEL: @test18(

19
test/Transforms/InstCombine/select-crash-noverify.ll Normal file
View File

@ -0,0 +1,19 @@
; RUN: opt < %s -disable-verify -instcombine -S | opt -S | FileCheck %s
; Formerly crashed, PR8490.
; CHECK-LABEL: @test3(
define i32 @test3(i1 %bool, i32 %a) {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
; technically reachable, but this malformed IR may appear as a result of constant propagation
xpto:
%select = select i1 %bool, i32 %a, i32 %select
%select2 = select i1 %bool, i32 %select2, i32 %a
%sum = add i32 %select, %select2
ret i32 %sum
return:
ret i32 7
}

17
test/Transforms/InstCombine/select-crash.ll
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@ -30,20 +30,3 @@ define <4 x float> @foo(i1 %b, <4 x float> %x, <4 x float> %y, <4 x float> %z) {
%sel = select i1 %b, <4 x float> %a, <4 x float> %sub
ret <4 x float> %sel
}
; CHECK-LABEL: @test3(
define i32 @test3(i1 %bool, i32 %a) {
entry:
%cond = or i1 %bool, true
br i1 %cond, label %return, label %xpto
; technically reachable, but this malformed IR may appear as a result of constant propagation
xpto:
%select = select i1 %bool, i32 %a, i32 %select
%select2 = select i1 %bool, i32 %select2, i32 %a
%sum = add i32 %select, %select2
ret i32 %sum
return:
ret i32 7
}

6
test/Transforms/InstCombine/select.ll
View File

@ -423,11 +423,11 @@ jump:
%c = or i1 false, false
br label %ret
ret:
%a = phi i1 [true, %jump], [%c, %entry]
%b = select i1 %a, i32 10, i32 20
%a = phi i1 [true, %entry], [%c, %jump]
%b = select i1 %a, i32 20, i32 10
ret i32 %b
; CHECK-LABEL: @test26(
; CHECK: %a = phi i32 [ 10, %jump ], [ 20, %entry ]
; CHECK: %a = phi i32 [ 20, %entry ], [ 10, %jump ]
; CHECK-NEXT: ret i32 %a
}

12
test/Transforms/InstCombine/vec_demanded_elts.ll
View File

@ -350,19 +350,19 @@ define <8 x float> @test_vpermilvar_ps_256(<8 x float> %v) {
ret <8 x float> %a
}
declare <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double>, <2 x i32>)
declare <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double>, <2 x i64>)
define <2 x double> @test_vpermilvar_pd(<2 x double> %v) {
; CHECK-LABEL: @test_vpermilvar_pd(
; CHECK: shufflevector <2 x double> %v, <2 x double> undef, <2 x i32> <i32 1, i32 0>
%a = tail call <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double> %v, <2 x i32> <i32 2, i32 0>)
%a = tail call <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double> %v, <2 x i64> <i64 2, i64 0>)
ret <2 x double> %a
}
declare <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double>, <4 x i32>)
declare <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double>, <4 x i64>)
define <4 x double> @test_vpermilvar_pd_256(<4 x double> %v) {
; CHECK-LABEL: @test_vpermilvar_pd_256(
; CHECK: shufflevector <4 x double> %v, <4 x double> undef, <4 x i32> <i32 1, i32 0, i32 3, i32 2>
%a = tail call <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double> %v, <4 x i32> <i32 3, i32 1, i32 2, i32 0>)
%a = tail call <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double> %v, <4 x i64> <i64 3, i64 1, i64 2, i64 0>)
ret <4 x double> %a
}
@ -383,14 +383,14 @@ define <8 x float> @test_vpermilvar_ps_256_zero(<8 x float> %v) {
define <2 x double> @test_vpermilvar_pd_zero(<2 x double> %v) {
; CHECK-LABEL: @test_vpermilvar_pd_zero(
; CHECK: shufflevector <2 x double> %v, <2 x double> undef, <2 x i32> zeroinitializer
%a = tail call <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double> %v, <2 x i32> zeroinitializer)
%a = tail call <2 x double> @llvm.x86.avx.vpermilvar.pd(<2 x double> %v, <2 x i64> zeroinitializer)
ret <2 x double> %a
}
define <4 x double> @test_vpermilvar_pd_256_zero(<4 x double> %v) {
; CHECK-LABEL: @test_vpermilvar_pd_256_zero(
; CHECK: shufflevector <4 x double> %v, <4 x double> undef, <4 x i32> <i32 0, i32 0, i32 2, i32 2>
%a = tail call <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double> %v, <4 x i32> zeroinitializer)
%a = tail call <4 x double> @llvm.x86.avx.vpermilvar.pd.256(<4 x double> %v, <4 x i64> zeroinitializer)
ret <4 x double> %a
}

2
test/Transforms/LoopSimplify/dup-preds.ll
View File

@ -28,7 +28,7 @@ for.body305: ; preds = %for.body305, %if.th
br label %for.body305
for.body344: ; preds = %for.body344, %for.body276.lr.ph, %for.body276.lr.ph
%indvar = phi i64 [ %indvar.next, %for.body344 ], [ 0, %for.body276.lr.ph ]
%indvar = phi i64 [ %indvar.next, %for.body344 ], [ 0, %for.body276.lr.ph ], [ 0, %for.body276.lr.ph ]
%indvars.iv552 = phi i64 [ %indvars.iv.next553, %for.body344 ], [ 0, %for.body276.lr.ph ], [ 0, %for.body276.lr.ph ]
%indvars.iv.next553 = add nuw nsw i64 %indvars.iv552, 1
%indvar.next = add i64 %indvar, 1

3
test/Transforms/LowerInvoke/2003-12-10-Crash.ll
View File

@ -15,8 +15,11 @@ invoke_cont.0: ; preds = %then
to label %try_exit unwind label %try_catch
try_catch: ; preds = %invoke_cont.0, %then
%__tmp.0 = phi i32* [ null, %invoke_cont.0 ], [ null, %then ] ; <i32*> [#uses=0]
%res = landingpad { i8* } personality i32 (...)* @__gxx_personality_v0
cleanup
ret void
try_exit: ; preds = %invoke_cont.0
ret void
}
declare i32 @__gxx_personality_v0(...)

2
test/Transforms/ObjCARC/move-and-merge-autorelease.ll
View File

@ -99,9 +99,9 @@ bb81: ; preds = %bb, %bb76
%tmp10.1 = phi %0* [ %tmp10.0, %bb76 ], [ null, %bb ]
%tmp83 = bitcast %0* %tmp10.1 to i8*
%tmp84 = call i8* @objc_retain(i8* %tmp83) nounwind
%tmp88 = bitcast i8* %tmp87 to %0*
call void @objc_release(i8* %tmp23) nounwind
%tmp87 = call i8* @objc_autorelease(i8* %tmp84) nounwind
%tmp88 = bitcast i8* %tmp87 to %0*
%tmp92 = bitcast %0* %tmp10.1 to i8*
call void @objc_release(i8* %tmp92) nounwind
ret %0* %tmp88

4
test/Transforms/SimplifyCFG/UnreachableEliminate.ll
View File

@ -22,11 +22,15 @@ entry:
invoke void @test2( )
to label %N unwind label %U
U:
%res = landingpad { i8* } personality i32 (...)* @__gxx_personality_v0
cleanup
unreachable
N:
ret void
}
declare i32 @__gxx_personality_v0(...)
define i32 @test3(i32 %v) {
; CHECK-LABEL: @test3(
; CHECK: entry:

9
tools/llc/llc.cpp
View File

@ -25,6 +25,7 @@
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/LegacyPassManager.h"
#include "llvm/IR/Module.h"
#include "llvm/IR/Verifier.h"
#include "llvm/IRReader/IRReader.h"
#include "llvm/MC/SubtargetFeature.h"
#include "llvm/Pass.h"
@ -225,6 +226,14 @@ static int compileModule(char **argv, LLVMContext &Context) {
return 1;
}
// Verify module immediately to catch problems before doInitialization() is
// called on any passes.
if (!NoVerify && verifyModule(*M, &errs())) {
errs() << argv[0] << ": " << InputFilename
<< ": error: does not verify\n";
return 1;
}
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
M->setTargetTriple(Triple::normalize(TargetTriple));

17
tools/opt/opt.cpp
View File

@ -25,6 +25,7 @@
#include "llvm/Bitcode/BitcodeWriterPass.h"
#include "llvm/CodeGen/CommandFlags.h"
#include "llvm/IR/DataLayout.h"
#include "llvm/IR/DebugInfo.h"
#include "llvm/IR/IRPrintingPasses.h"
#include "llvm/IR/LLVMContext.h"
#include "llvm/IR/LegacyPassNameParser.h"
@ -345,6 +346,18 @@ int main(int argc, char **argv) {
return 1;
}
// Strip debug info before running the verifier.
if (StripDebug)
StripDebugInfo(*M);
// Immediately run the verifier to catch any problems before starting up the
// pass pipelines. Otherwise we can crash on broken code during
// doInitialization().
if (!NoVerify && verifyModule(*M, &errs())) {
errs() << argv[0] << ": " << InputFilename << ": error: does not verify\n";
return 1;
}
// If we are supposed to override the target triple, do so now.
if (!TargetTriple.empty())
M->setTargetTriple(Triple::normalize(TargetTriple));
@ -449,10 +462,6 @@ int main(int argc, char **argv) {
NoOutput = true;
}
// If the -strip-debug command line option was specified, add it.
if (StripDebug)
addPass(Passes, createStripSymbolsPass(true));
// Create a new optimization pass for each one specified on the command line
for (unsigned i = 0; i < PassList.size(); ++i) {
if (StandardLinkOpts &&