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Fix CB vector to scalar array translation generating invalid IR (#6777) #6800

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Merged
python3kgae merged 1 commit into from
Jul 22, 2024
Merged

Fix CB vector to scalar array translation generating invalid IR (#6777) #6800

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80 changes: 65 additions & 15 deletions lib/Transforms/Scalar/ScalarReplAggregatesHLSL.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -3427,7 +3427,7 @@ static void updateLifetimeForReplacement(Value *From, Value *To) {
static bool DominateAllUsers(Instruction *I, Value *V, DominatorTree *DT);

namespace {
void replaceScalarArrayGEPWithVectorArrayGEP(User *GEP, Value *VectorArray,
bool replaceScalarArrayGEPWithVectorArrayGEP(User *GEP, Value *VectorArray,
IRBuilder<> &Builder,
unsigned sizeInDwords) {
gep_type_iterator GEPIt = gep_type_begin(GEP), E = gep_type_end(GEP);
Expand Down Expand Up @@ -3461,11 +3461,30 @@ void replaceScalarArrayGEPWithVectorArrayGEP(User *GEP, Value *VectorArray,
Value *CompIdx = Builder.CreateAnd(ArrayIdx, mask);
Value *NewGEP = Builder.CreateGEP(
VecPtr, {ConstantInt::get(CompIdx->getType(), 0), CompIdx});
GEP->replaceAllUsesWith(NewGEP);

if (isa<ConstantExpr>(GEP) && isa<Instruction>(NewGEP)) {
if (!ReplaceConstantWithInst(cast<Constant>(GEP), NewGEP, Builder)) {
// If new instructions unable to be used, clean them up.
if (NewGEP->user_empty())
cast<Instruction>(NewGEP)->eraseFromParent();
if (isa<Instruction>(VecPtr) && VecPtr->user_empty())
cast<Instruction>(VecPtr)->eraseFromParent();
if (isa<Instruction>(CompIdx) && CompIdx->user_empty())
cast<Instruction>(CompIdx)->eraseFromParent();
if (isa<Instruction>(VecIdx) && VecIdx->user_empty())
cast<Instruction>(VecIdx)->eraseFromParent();
return false;
}
return true;
} else {
GEP->replaceAllUsesWith(NewGEP);
}
return true;
}

void replaceScalarArrayWithVectorArray(Value *ScalarArray, Value *VectorArray,
bool replaceScalarArrayWithVectorArray(Value *ScalarArray, Value *VectorArray,
MemCpyInst *MC, unsigned sizeInDwords) {
bool bReplacedAll = true;
LLVMContext &Context = ScalarArray->getContext();
// All users should be element type.
// Replace users of AI or GV.
Expand All @@ -3474,38 +3493,52 @@ void replaceScalarArrayWithVectorArray(Value *ScalarArray, Value *VectorArray,
if (U->user_empty())
continue;
if (BitCastInst *BCI = dyn_cast<BitCastInst>(U)) {
BCI->setOperand(0, VectorArray);
// Avoid replacing the dest of the memcpy to support partial replacement.
if (MC->getArgOperand(0) != BCI)
Comment thread
python3kgae marked this conversation as resolved.
BCI->setOperand(0, VectorArray);
continue;
}

if (ConstantExpr *CE = dyn_cast<ConstantExpr>(U)) {
IRBuilder<> Builder(Context);
// If we need to replace the constant with an instruction, start at the
// memcpy, so we replace only users dominated by it.
if (isa<Instruction>(VectorArray))
Builder.SetInsertPoint(MC);

if (GEPOperator *GEP = dyn_cast<GEPOperator>(U)) {
// NewGEP must be GEPOperator too.
// No instruction will be build.
replaceScalarArrayGEPWithVectorArrayGEP(U, VectorArray, Builder,
sizeInDwords);
if (!replaceScalarArrayGEPWithVectorArrayGEP(U, VectorArray, Builder,
sizeInDwords))
bReplacedAll = false;
} else if (CE->getOpcode() == Instruction::AddrSpaceCast) {
Value *NewAddrSpaceCast = Builder.CreateAddrSpaceCast(
VectorArray,
PointerType::get(VectorArray->getType()->getPointerElementType(),
CE->getType()->getPointerAddressSpace()));
replaceScalarArrayWithVectorArray(CE, NewAddrSpaceCast, MC,
sizeInDwords);
if (!replaceScalarArrayWithVectorArray(CE, NewAddrSpaceCast, MC,
sizeInDwords)) {
bReplacedAll = false;
if (Instruction *NewInst = dyn_cast<Instruction>(NewAddrSpaceCast))
if (NewInst->user_empty())
NewInst->eraseFromParent();
}
} else if (CE->hasOneUse() && CE->user_back() == MC) {
continue;
} else {
DXASSERT(0, "not implemented");
}
} else if (GetElementPtrInst *GEP = dyn_cast<GetElementPtrInst>(U)) {
IRBuilder<> Builder(GEP);
replaceScalarArrayGEPWithVectorArrayGEP(U, VectorArray, Builder,
sizeInDwords);
GEP->eraseFromParent();
if (!replaceScalarArrayGEPWithVectorArrayGEP(U, VectorArray, Builder,
sizeInDwords))
bReplacedAll = false;
else
GEP->eraseFromParent();
} else {
DXASSERT(0, "not implemented");
}
}
return bReplacedAll;
}

// For pattern like
Expand All @@ -3521,8 +3554,25 @@ bool tryToReplaceCBVec4ArrayToScalarArray(Value *V, Type *TyV, Value *Src,
Type *EltTy = AT->getElementType();
unsigned sizeInBits = DL.getTypeSizeInBits(EltTy);
// Convert array of float4 to array of float.
replaceScalarArrayWithVectorArray(V, Src, MC, sizeInBits >> 5);
return true;
if (replaceScalarArrayWithVectorArray(V, Src, MC, sizeInBits >> 5)) {
Value *DstBC = MC->getArgOperand(0);
MC->setArgOperand(0, UndefValue::get(MC->getArgOperand(0)->getType()));
if (DstBC->user_empty()) {
// Replacement won't include the memcpy dest. Now remove that use.
if (BitCastInst *BCI = dyn_cast<BitCastInst>(DstBC)) {
Value *Dst = BCI->getOperand(0);
Type *DstTy = Dst->getType();
if (Dst == V)
BCI->setOperand(0, UndefValue::get(DstTy));
else
llvm_unreachable("Unexpected dest of memcpy.");
}
} else {
llvm_unreachable("Unexpected users of memcpy bitcast.");
}
return true;
}
return false;
}

} // namespace
Expand Down
146 changes: 146 additions & 0 deletions tools/clang/test/HLSLFileCheck/passes/hl/sroa_hlsl/array-from-cbvec-1.ll
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Original file line number Diff line number Diff line change
@@ -0,0 +1,146 @@
; RUN: %opt %s -hlsl-passes-resume -scalarrepl-param-hlsl -S | FileCheck %s

; This case should fail to do memcpy replacement because init block does not
; dominate init.end block.
; However, it should not produce invalid IR, as it would have with #6510 due
; to attempting to replace constant dest with instruction source, while
; assuming the source was not constant.

; This makes sure memcpy was split and elements are properly copied to the
; scalar array, then that the scalar array is used for the result.

; Generated using:
; ExtractIRForPassTest.py -p scalarrepl-param-hlsl -o array-to-cbvec-1.ll array-to-cbvec-1.hlsl -- -T vs_6_0
; uint4 VectorArray[2];
;
; uint2 main(int i : IN) : OUT {
; static const uint ScalarArray[8] = (uint[8])VectorArray;
; return uint2(ScalarArray[1], ScalarArray[6]);
; }

; CHECK-NOT: badref
; CHECK-NOT: store <4 x float> zeroinitializer

; Copy array elements from constant to scalar array
; CHECK: %[[VectorArray:.*]] = getelementptr inbounds %"$Globals", %"$Globals"* %{{.*}}, i32 0, i32 0
; CHECK: %[[gep_VA0:.*]] = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %[[VectorArray]], i32 0, i32 0
; CHECK: %[[ld_VA0:.*]] = load <4 x i32>, <4 x i32>* %[[gep_VA0]]
; CHECK: %[[ea_VA0_1:.*]] = extractelement <4 x i32> %[[ld_VA0]], i64 1
; CHECK: store i32 %[[ea_VA0_1]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 1)
; CHECK: %[[gep_VA1:.*]] = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %[[VectorArray]], i32 0, i32 1
; CHECK: %[[ld_VA1:.*]] = load <4 x i32>, <4 x i32>* %[[gep_VA1]]
; CHECK: %[[ea_VA1_2:.*]] = extractelement <4 x i32> %[[ld_VA1]], i64 2
; CHECK: store i32 %[[ea_VA1_2]], i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 6)

; Load from scalar array and return it
; CHECK: %[[ld_SA1:.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 1), align 4
; CHECK: %[[ld_SA6:.*]] = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 6), align 4
; CHECK: %[[ie_SA1:.*]] = insertelement <2 x i32> undef, i32 %[[ld_SA1]], i64 0
; CHECK: %[[ie_SA6:.*]] = insertelement <2 x i32> %[[ie_SA1]], i32 %[[ld_SA6]], i64 1
; CHECK: store <2 x i32> %[[ie_SA6]], <2 x i32>* %0

target datalayout = "e-m:e-p:32:32-i1:32-i8:32-i16:32-i32:32-i64:64-f16:32-f32:32-f64:64-n8:16:32:64"
target triple = "dxil-ms-dx"

%"$Globals" = type { [2 x <4 x i32>] }
%dx.types.Handle = type { i8* }
%dx.types.ResourceProperties = type { i32, i32 }

@"\01?VectorArray@@3QBV?$vector@I$03@@B" = external constant [2 x <4 x i32>], align 4
@"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB" = internal global [8 x i32] zeroinitializer, align 4
@"$Globals" = external constant %"$Globals"

; Function Attrs: nounwind
define <2 x i32> @main(i32 %i) #0 {
entry:
%0 = alloca i32
store i32 0, i32* %0
%1 = call %dx.types.Handle @"dx.hl.createhandle..%dx.types.Handle (i32, %\22$Globals\22*, i32)"(i32 0, %"$Globals"* @"$Globals", i32 0)
%2 = call %dx.types.Handle @"dx.hl.annotatehandle..%dx.types.Handle (i32, %dx.types.Handle, %dx.types.ResourceProperties, %\22$Globals\22)"(i32 14, %dx.types.Handle %1, %dx.types.ResourceProperties { i32 13, i32 32 }, %"$Globals" undef)
%3 = call %"$Globals"* @"dx.hl.subscript.cb.rn.%\22$Globals\22* (i32, %dx.types.Handle, i32)"(i32 6, %dx.types.Handle %2, i32 0)
%4 = getelementptr inbounds %"$Globals", %"$Globals"* %3, i32 0, i32 0
%i.addr = alloca i32, align 4, !dx.temp !13
store i32 %i, i32* %i.addr, align 4, !tbaa !23
%5 = load i32, i32* %0, !dbg !27 ; line:4 col:5
%6 = and i32 %5, 1, !dbg !27 ; line:4 col:5
%7 = icmp ne i32 %6, 0, !dbg !27 ; line:4 col:5
br i1 %7, label %init.end, label %init, !dbg !27 ; line:4 col:5

init: ; preds = %entry
%8 = or i32 %5, 1, !dbg !27 ; line:4 col:5
store i32 %8, i32* %0, !dbg !27 ; line:4 col:5
%9 = bitcast [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB" to i8*, !dbg !31 ; line:4 col:49
%10 = bitcast [2 x <4 x i32>]* %4 to i8*, !dbg !31 ; line:4 col:49
call void @llvm.memcpy.p0i8.p0i8.i64(i8* %9, i8* %10, i64 32, i32 1, i1 false), !dbg !31 ; line:4 col:49
br label %init.end, !dbg !27 ; line:4 col:5

init.end: ; preds = %init, %entry
%11 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 1), align 4, !dbg !32, !tbaa !23 ; line:5 col:18
%12 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @"\01?ScalarArray@?1??main@@YA?AV?$vector@I$01@@H@Z@4QBIB", i32 0, i32 6), align 4, !dbg !33, !tbaa !23 ; line:5 col:34
%13 = insertelement <2 x i32> undef, i32 %11, i64 0, !dbg !34 ; line:5 col:17
%14 = insertelement <2 x i32> %13, i32 %12, i64 1, !dbg !34 ; line:5 col:17
ret <2 x i32> %14, !dbg !35 ; line:5 col:5
}

; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #0

; Function Attrs: nounwind readnone
declare %"$Globals"* @"dx.hl.subscript.cb.rn.%\22$Globals\22* (i32, %dx.types.Handle, i32)"(i32, %dx.types.Handle, i32) #1

; Function Attrs: nounwind readnone
declare %dx.types.Handle @"dx.hl.createhandle..%dx.types.Handle (i32, %\22$Globals\22*, i32)"(i32, %"$Globals"*, i32) #1

; Function Attrs: nounwind readnone
declare %dx.types.Handle @"dx.hl.annotatehandle..%dx.types.Handle (i32, %dx.types.Handle, %dx.types.ResourceProperties, %\22$Globals\22)"(i32, %dx.types.Handle, %dx.types.ResourceProperties, %"$Globals") #1

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }

!llvm.module.flags = !{!0}
!pauseresume = !{!1}
!llvm.ident = !{!2}
!dx.version = !{!3}
!dx.valver = !{!4}
!dx.shaderModel = !{!5}
!dx.typeAnnotations = !{!6, !9}
!dx.entryPoints = !{!16}
!dx.fnprops = !{!20}
!dx.options = !{!21, !22}

!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !{!"hlsl-hlemit", !"hlsl-hlensure"}
!2 = !{!"dxc(private) 1.8.0.14508 (main, 263a77335-dirty)"}
!3 = !{i32 1, i32 0}
!4 = !{i32 1, i32 7}
!5 = !{!"vs", i32 6, i32 0}
!6 = !{i32 0, %"$Globals" undef, !7}
!7 = !{i32 32, !8}
!8 = !{i32 6, !"VectorArray", i32 3, i32 0, i32 7, i32 5}
!9 = !{i32 1, <2 x i32> (i32)* @main, !10}
!10 = !{!11, !14}
!11 = !{i32 1, !12, !13}
!12 = !{i32 4, !"OUT", i32 7, i32 5}
!13 = !{}
!14 = !{i32 0, !15, !13}
!15 = !{i32 4, !"IN", i32 7, i32 4}
!16 = !{<2 x i32> (i32)* @main, !"main", null, !17, null}
!17 = !{null, null, !18, null}
!18 = !{!19}
!19 = !{i32 0, %"$Globals"* @"$Globals", !"$Globals", i32 0, i32 -1, i32 1, i32 32, null}
!20 = !{<2 x i32> (i32)* @main, i32 1}
!21 = !{i32 -2147483584}
!22 = !{i32 -1}
!23 = !{!24, !24, i64 0}
!24 = !{!"int", !25, i64 0}
!25 = !{!"omnipotent char", !26, i64 0}
!26 = !{!"Simple C/C++ TBAA"}
!27 = !DILocation(line: 4, column: 5, scope: !28)
!28 = !DISubprogram(name: "main", scope: !29, file: !29, line: 3, type: !30, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, function: <2 x i32> (i32)* @main)
!29 = !DIFile(filename: "t:\5Carray-mapping.hlsl", directory: "")
!30 = !DISubroutineType(types: !13)
!31 = !DILocation(line: 4, column: 49, scope: !28)
!32 = !DILocation(line: 5, column: 18, scope: !28)
!33 = !DILocation(line: 5, column: 34, scope: !28)
!34 = !DILocation(line: 5, column: 17, scope: !28)
!35 = !DILocation(line: 5, column: 5, scope: !28)
118 changes: 118 additions & 0 deletions tools/clang/test/HLSLFileCheck/passes/hl/sroa_hlsl/array-from-cbvec-2.ll
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,118 @@
; RUN: %opt %s -hlsl-passes-resume -scalarrepl-param-hlsl -S | FileCheck %s

; Local ScalarArray copy should be eliminated in favor of directly accessing
; VectorArray from cbuffer.

; Generated using:
; ExtractIRForPassTest.py -p scalarrepl-param-hlsl -o array-to-cbvec-2.ll array-to-cbvec-2.hlsl -- -T vs_6_0
; uint4 VectorArray[2];
; static const uint ScalarArray[8] = (uint[8])VectorArray;
;
; uint2 main(int i : IN) : OUT {
; return uint2(ScalarArray[1], ScalarArray[6]);
; }

; replace memcpy path works in this case
; CHECK: %[[VectorArray:.*]] = getelementptr inbounds %"$Globals", %"$Globals"* %{{.*}}, i32 0, i32 0
; CHECK: %[[gep_VA1:.*]] = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %[[VectorArray]], i32 0, i32 1
; CHECK: %[[gep_VA1_2:.*]] = getelementptr <4 x i32>, <4 x i32>* %[[gep_VA1]], i32 0, i32 2
; CHECK: %[[gep_VA0:.*]] = getelementptr [2 x <4 x i32>], [2 x <4 x i32>]* %[[VectorArray]], i32 0, i32 0
; CHECK: %[[gep_VA0_1:.*]] = getelementptr <4 x i32>, <4 x i32>* %[[gep_VA0]], i32 0, i32 1
; CHECK: %[[ld_VA0_1:.*]] = load i32, i32* %[[gep_VA0_1]], align 4
; CHECK: %[[ld_VA1_2:.*]] = load i32, i32* %[[gep_VA1_2]], align 4
; CHECK: %[[ie_VA0_1:.*]] = insertelement <2 x i32> undef, i32 %[[ld_VA0_1]], i64 0
; CHECK: %[[ie_VA1_2:.*]] = insertelement <2 x i32> %[[ie_VA0_1]], i32 %[[ld_VA1_2]], i64 1
; CHECK: store <2 x i32> %[[ie_VA1_2]], <2 x i32>* %0

target datalayout = "e-m:e-p:32:32-i1:32-i8:32-i16:32-i32:32-i64:64-f16:32-f32:32-f64:64-n8:16:32:64"
target triple = "dxil-ms-dx"

%"$Globals" = type { [2 x <4 x i32>] }
%dx.types.Handle = type { i8* }
%dx.types.ResourceProperties = type { i32, i32 }

@"\01?VectorArray@@3QBV?$vector@I$03@@B" = external constant [2 x <4 x i32>], align 4
@ScalarArray = internal global [8 x i32] undef, align 4
@"$Globals" = external constant %"$Globals"

; Function Attrs: nounwind
define <2 x i32> @main(i32 %i) #0 {
entry:
%0 = call %dx.types.Handle @"dx.hl.createhandle..%dx.types.Handle (i32, %\22$Globals\22*, i32)"(i32 0, %"$Globals"* @"$Globals", i32 0) #0, !dbg !23 ; line:2 col:45
%1 = call %dx.types.Handle @"dx.hl.annotatehandle..%dx.types.Handle (i32, %dx.types.Handle, %dx.types.ResourceProperties, %\22$Globals\22)"(i32 14, %dx.types.Handle %0, %dx.types.ResourceProperties { i32 13, i32 32 }, %"$Globals" undef) #0, !dbg !23 ; line:2 col:45
%2 = call %"$Globals"* @"dx.hl.subscript.cb.rn.%\22$Globals\22* (i32, %dx.types.Handle, i32)"(i32 6, %dx.types.Handle %1, i32 0) #0, !dbg !23 ; line:2 col:45
%3 = getelementptr inbounds %"$Globals", %"$Globals"* %2, i32 0, i32 0, !dbg !23 ; line:2 col:45
%4 = bitcast [2 x <4 x i32>]* %3 to i8*, !dbg !23 ; line:2 col:45
call void @llvm.memcpy.p0i8.p0i8.i64(i8* bitcast ([8 x i32]* @ScalarArray to i8*), i8* %4, i64 32, i32 1, i1 false) #0, !dbg !23 ; line:2 col:45
%i.addr = alloca i32, align 4, !dx.temp !13
store i32 %i, i32* %i.addr, align 4, !tbaa !29
%5 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @ScalarArray, i32 0, i32 1), align 4, !dbg !33, !tbaa !29 ; line:5 col:18
%6 = load i32, i32* getelementptr inbounds ([8 x i32], [8 x i32]* @ScalarArray, i32 0, i32 6), align 4, !dbg !34, !tbaa !29 ; line:5 col:34
%7 = insertelement <2 x i32> undef, i32 %5, i64 0, !dbg !35 ; line:5 col:17
%8 = insertelement <2 x i32> %7, i32 %6, i64 1, !dbg !35 ; line:5 col:17
ret <2 x i32> %8, !dbg !36 ; line:5 col:5
}

; Function Attrs: nounwind
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture readonly, i64, i32, i1) #0

; Function Attrs: nounwind readnone
declare %"$Globals"* @"dx.hl.subscript.cb.rn.%\22$Globals\22* (i32, %dx.types.Handle, i32)"(i32, %dx.types.Handle, i32) #1

; Function Attrs: nounwind readnone
declare %dx.types.Handle @"dx.hl.createhandle..%dx.types.Handle (i32, %\22$Globals\22*, i32)"(i32, %"$Globals"*, i32) #1

; Function Attrs: nounwind readnone
declare %dx.types.Handle @"dx.hl.annotatehandle..%dx.types.Handle (i32, %dx.types.Handle, %dx.types.ResourceProperties, %\22$Globals\22)"(i32, %dx.types.Handle, %dx.types.ResourceProperties, %"$Globals") #1

attributes #0 = { nounwind }
attributes #1 = { nounwind readnone }

!llvm.module.flags = !{!0}
!pauseresume = !{!1}
!llvm.ident = !{!2}
!dx.version = !{!3}
!dx.valver = !{!4}
!dx.shaderModel = !{!5}
!dx.typeAnnotations = !{!6, !9}
!dx.entryPoints = !{!16}
!dx.fnprops = !{!20}
!dx.options = !{!21, !22}

!0 = !{i32 2, !"Debug Info Version", i32 3}
!1 = !{!"hlsl-hlemit", !"hlsl-hlensure"}
!2 = !{!"dxc(private) 1.8.0.14508 (main, 263a77335-dirty)"}
!3 = !{i32 1, i32 0}
!4 = !{i32 1, i32 7}
!5 = !{!"vs", i32 6, i32 0}
!6 = !{i32 0, %"$Globals" undef, !7}
!7 = !{i32 32, !8}
!8 = !{i32 6, !"VectorArray", i32 3, i32 0, i32 7, i32 5}
!9 = !{i32 1, <2 x i32> (i32)* @main, !10}
!10 = !{!11, !14}
!11 = !{i32 1, !12, !13}
!12 = !{i32 4, !"OUT", i32 7, i32 5}
!13 = !{}
!14 = !{i32 0, !15, !13}
!15 = !{i32 4, !"IN", i32 7, i32 4}
!16 = !{<2 x i32> (i32)* @main, !"main", null, !17, null}
!17 = !{null, null, !18, null}
!18 = !{!19}
!19 = !{i32 0, %"$Globals"* @"$Globals", !"$Globals", i32 0, i32 -1, i32 1, i32 32, null}
!20 = !{<2 x i32> (i32)* @main, i32 1}
!21 = !{i32 -2147483584}
!22 = !{i32 -1}
!23 = !DILocation(line: 2, column: 45, scope: !24, inlinedAt: !27)
!24 = !DISubprogram(name: "??__EScalarArray@@YAXXZ", scope: !25, file: !25, line: 2, type: !26, isLocal: true, isDefinition: true, scopeLine: 2, flags: DIFlagPrototyped, isOptimized: false)
!25 = !DIFile(filename: "t:\5Carray-mapping.hlsl", directory: "")
!26 = !DISubroutineType(types: !13)
!27 = distinct !DILocation(line: 4, scope: !28)
!28 = !DISubprogram(name: "main", scope: !25, file: !25, line: 4, type: !26, isLocal: false, isDefinition: true, scopeLine: 4, flags: DIFlagPrototyped, isOptimized: false, function: <2 x i32> (i32)* @main)
!29 = !{!30, !30, i64 0}
!30 = !{!"int", !31, i64 0}
!31 = !{!"omnipotent char", !32, i64 0}
!32 = !{!"Simple C/C++ TBAA"}
!33 = !DILocation(line: 5, column: 18, scope: !28)
!34 = !DILocation(line: 5, column: 34, scope: !28)
!35 = !DILocation(line: 5, column: 17, scope: !28)
!36 = !DILocation(line: 5, column: 5, scope: !28)
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