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HLSL: Fix #919: for-init-statement is arbitrary declaration or expression.

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Unlike "if (XXX)" and "while (XXX)", with "for (YYY...", the YYY can be
more kinds of statements than the XXX.
This commit is contained in:
John Kessenich 2017-06-06 11:37:33 -06:00
parent e00e8f45a6
commit 0e07119ae2
5 changed files with 322 additions and 62 deletions
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290
Test/baseResults/hlsl.forLoop.frag.out
View File

@ -110,6 +110,80 @@ gl_FragCoord origin is upper left
0:11 'ii' ( temp int)
0:12 Pre-Decrement ( temp float)
0:12 'ii' ( temp float)
0:13 Sequence
0:13 move second child to first child ( temp int)
0:13 'first' ( temp int)
0:13 Constant:
0:13 0 (const int)
0:13 move second child to first child ( temp int)
0:13 'second' ( temp int)
0:13 Constant:
0:13 1 (const int)
0:13 Loop with condition tested first
0:13 No loop condition
0:13 Loop Body
0:13 add ( temp int)
0:13 'first' ( temp int)
0:13 'second' ( temp int)
0:14 Sequence
0:14 move second child to first child ( temp int)
0:14 'i' ( temp int)
0:14 Constant:
0:14 0 (const int)
0:14 move second child to first child ( temp int)
0:14 'count' ( temp int)
0:14 Convert float to int ( temp int)
0:14 'ii' ( temp float)
0:14 Loop with condition tested first
0:14 Loop Condition
0:14 Compare Less Than ( temp bool)
0:14 'i' ( temp int)
0:14 'count' ( temp int)
0:14 No loop body
0:14 Loop Terminal Expression
0:14 Post-Increment ( temp int)
0:14 'i' ( temp int)
0:15 Sequence
0:15 move second child to first child ( temp float)
0:15 'first' ( temp float)
0:15 Constant:
0:15 0.000000
0:15 Loop with condition tested first
0:15 Loop Condition
0:15 Compare Less Than ( temp bool)
0:15 'first' ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 0 (const int)
0:15 Loop Body
0:15 add ( temp float)
0:15 add ( temp float)
0:15 'first' ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 1 (const int)
0:15 'third' ( temp float)
0:15 Loop Terminal Expression
0:15 Pre-Increment ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 1 (const int)
0:? Sequence
0:16 Comma ( temp float)
0:16 Comma ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Loop with condition tested first
0:16 No loop condition
0:16 Loop Body
0:16 'ii' ( temp float)
0:2 Function Definition: PixelShaderFunction( ( temp void)
0:2 Function Parameters:
0:? Sequence
@ -239,6 +313,80 @@ gl_FragCoord origin is upper left
0:11 'ii' ( temp int)
0:12 Pre-Decrement ( temp float)
0:12 'ii' ( temp float)
0:13 Sequence
0:13 move second child to first child ( temp int)
0:13 'first' ( temp int)
0:13 Constant:
0:13 0 (const int)
0:13 move second child to first child ( temp int)
0:13 'second' ( temp int)
0:13 Constant:
0:13 1 (const int)
0:13 Loop with condition tested first
0:13 No loop condition
0:13 Loop Body
0:13 add ( temp int)
0:13 'first' ( temp int)
0:13 'second' ( temp int)
0:14 Sequence
0:14 move second child to first child ( temp int)
0:14 'i' ( temp int)
0:14 Constant:
0:14 0 (const int)
0:14 move second child to first child ( temp int)
0:14 'count' ( temp int)
0:14 Convert float to int ( temp int)
0:14 'ii' ( temp float)
0:14 Loop with condition tested first
0:14 Loop Condition
0:14 Compare Less Than ( temp bool)
0:14 'i' ( temp int)
0:14 'count' ( temp int)
0:14 No loop body
0:14 Loop Terminal Expression
0:14 Post-Increment ( temp int)
0:14 'i' ( temp int)
0:15 Sequence
0:15 move second child to first child ( temp float)
0:15 'first' ( temp float)
0:15 Constant:
0:15 0.000000
0:15 Loop with condition tested first
0:15 Loop Condition
0:15 Compare Less Than ( temp bool)
0:15 'first' ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 0 (const int)
0:15 Loop Body
0:15 add ( temp float)
0:15 add ( temp float)
0:15 'first' ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 1 (const int)
0:15 'third' ( temp float)
0:15 Loop Terminal Expression
0:15 Pre-Increment ( temp float)
0:15 direct index ( temp float)
0:15 'second' ( temp 2-element array of float)
0:15 Constant:
0:15 1 (const int)
0:? Sequence
0:16 Comma ( temp float)
0:16 Comma ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Pre-Decrement ( temp float)
0:16 'ii' ( temp float)
0:16 Loop with condition tested first
0:16 No loop condition
0:16 Loop Body
0:16 'ii' ( temp float)
0:2 Function Definition: PixelShaderFunction( ( temp void)
0:2 Function Parameters:
0:? Sequence
@ -255,12 +403,12 @@ gl_FragCoord origin is upper left
// Module Version 10000
// Generated by (magic number): 80001
// Id's are bound by 124
// Id's are bound by 183
Capability Shader
1: ExtInstImport "GLSL.std.450"
MemoryModel Logical GLSL450
EntryPoint Fragment 4 "PixelShaderFunction" 117 120
EntryPoint Fragment 4 "PixelShaderFunction" 176 179
ExecutionMode 4 OriginUpperLeft
Source HLSL 500
Name 4 "PixelShaderFunction"
@ -268,12 +416,19 @@ gl_FragCoord origin is upper left
Name 10 "input"
Name 92 "ii"
Name 111 "ii"
Name 115 "input"
Name 117 "input"
Name 120 "@entryPointOutput"
Name 121 "param"
Decorate 117(input) Location 0
Decorate 120(@entryPointOutput) Location 0
Name 114 "first"
Name 116 "second"
Name 124 "i"
Name 125 "count"
Name 138 "first"
Name 149 "second"
Name 157 "third"
Name 174 "input"
Name 176 "input"
Name 179 "@entryPointOutput"
Name 180 "param"
Decorate 176(input) Location 0
Decorate 179(@entryPointOutput) Location 0
2: TypeVoid
3: TypeFunction 2
6: TypeFloat 32
@ -293,20 +448,25 @@ gl_FragCoord origin is upper left
100: 90(int) Constant 3
103: 90(int) Constant 2
109: 90(int) Constant 1
116: TypePointer Input 7(fvec4)
117(input): 116(ptr) Variable Input
119: TypePointer Output 7(fvec4)
120(@entryPointOutput): 119(ptr) Variable Output
115: 90(int) Constant 0
139: 6(float) Constant 0
146: 71(int) Constant 2
147: TypeArray 6(float) 146
148: TypePointer Function 147
175: TypePointer Input 7(fvec4)
176(input): 175(ptr) Variable Input
178: TypePointer Output 7(fvec4)
179(@entryPointOutput): 178(ptr) Variable Output
4(PixelShaderFunction): 2 Function None 3
5: Label
115(input): 8(ptr) Variable Function
121(param): 8(ptr) Variable Function
118: 7(fvec4) Load 117(input)
Store 115(input) 118
122: 7(fvec4) Load 115(input)
Store 121(param) 122
123: 7(fvec4) FunctionCall 11(@PixelShaderFunction(vf4;) 121(param)
Store 120(@entryPointOutput) 123
174(input): 8(ptr) Variable Function
180(param): 8(ptr) Variable Function
177: 7(fvec4) Load 176(input)
Store 174(input) 177
181: 7(fvec4) Load 174(input)
Store 180(param) 181
182: 7(fvec4) FunctionCall 11(@PixelShaderFunction(vf4;) 180(param)
Store 179(@entryPointOutput) 182
Return
FunctionEnd
11(@PixelShaderFunction(vf4;): 7(fvec4) Function None 9
@ -314,6 +474,13 @@ gl_FragCoord origin is upper left
12: Label
92(ii): 91(ptr) Variable Function
111(ii): 73(ptr) Variable Function
114(first): 91(ptr) Variable Function
116(second): 91(ptr) Variable Function
124(i): 91(ptr) Variable Function
125(count): 91(ptr) Variable Function
138(first): 73(ptr) Variable Function
149(second): 148(ptr) Variable Function
157(third): 73(ptr) Variable Function
Branch 13
13: Label
LoopMerge 15 16 None
@ -454,6 +621,85 @@ gl_FragCoord origin is upper left
112: 6(float) Load 111(ii)
113: 6(float) FSub 112 18
Store 111(ii) 113
114: 7(fvec4) Undef
ReturnValue 114
Store 114(first) 115
Store 116(second) 109
Branch 117
117: Label
LoopMerge 119 120 None
Branch 118
118: Label
121: 90(int) Load 114(first)
122: 90(int) Load 116(second)
123: 90(int) IAdd 121 122
Branch 120
120: Label
Branch 117
119: Label
Store 124(i) 115
126: 6(float) Load 111(ii)
127: 90(int) ConvertFToS 126
Store 125(count) 127
Branch 128
128: Label
LoopMerge 130 131 None
Branch 132
132: Label
133: 90(int) Load 124(i)
134: 90(int) Load 125(count)
135: 32(bool) SLessThan 133 134
BranchConditional 135 129 130
129: Label
Branch 131
131: Label
136: 90(int) Load 124(i)
137: 90(int) IAdd 136 109
Store 124(i) 137
Branch 128
130: Label
Store 138(first) 139
Branch 140
140: Label
LoopMerge 142 143 None
Branch 144
144: Label
145: 6(float) Load 138(first)
150: 73(ptr) AccessChain 149(second) 115
151: 6(float) Load 150
152: 32(bool) FOrdLessThan 145 151
BranchConditional 152 141 142
141: Label
153: 6(float) Load 138(first)
154: 73(ptr) AccessChain 149(second) 109
155: 6(float) Load 154
156: 6(float) FAdd 153 155
158: 6(float) Load 157(third)
159: 6(float) FAdd 156 158
Branch 143
143: Label
160: 73(ptr) AccessChain 149(second) 109
161: 6(float) Load 160
162: 6(float) FAdd 161 18
Store 160 162
Branch 140
142: Label
163: 6(float) Load 111(ii)
164: 6(float) FSub 163 18
Store 111(ii) 164
165: 6(float) Load 111(ii)
166: 6(float) FSub 165 18
Store 111(ii) 166
167: 6(float) Load 111(ii)
168: 6(float) FSub 167 18
Store 111(ii) 168
Branch 169
169: Label
LoopMerge 171 172 None
Branch 170
170: Label
Branch 172
172: Label
Branch 169
171: Label
173: 7(fvec4) Undef
ReturnValue 173
FunctionEnd

14
Test/hlsl.forLoop.frag
View File

@ -5,9 +5,13 @@ float4 PixelShaderFunction(float4 input) : COLOR0
[unroll] for (; any(input != input); ) {}
for (; any(input != input); ) { return -input; }
for (--input; any(input != input); input += 2) { return -input; }
for (;;) if (input.x > 2.0) break;
for (;;) if (input.x > 2.0) continue;
float ii;
for (int ii = -1; ii < 3; ++ii) if (ii == 2) continue;
--ii;
for (;;) if (input.x > 2.0) break;
for (;;) if (input.x > 2.0) continue;
float ii;
for (int ii = -1; ii < 3; ++ii) if (ii == 2) continue;
--ii;
for (int first = 0, second = 1; ;) first + second;
for ( int i = 0, count = int(ii); i < count; i++ );
for (float first = 0, second[2], third; first < second[0]; ++second[1]) first + second[1] + third;
for (--ii, --ii, --ii;;) ii;
}

9
glslang/MachineIndependent/Intermediate.cpp
View File

@ -1735,8 +1735,13 @@ TIntermAggregate* TIntermediate::addForLoop(TIntermNode* body, TIntermNode* init
node->setLoc(loc);
node->setLoopControl(control);
// make a sequence of the initializer and statement
TIntermAggregate* loopSequence = makeAggregate(initializer, loc);
// make a sequence of the initializer and statement, but try to reuse the
// aggregate already created for whatever is in the initializer, if there is one
TIntermAggregate* loopSequence = (initializer == nullptr ||
initializer->getAsAggregate() == nullptr) ? makeAggregate(initializer, loc)
: initializer->getAsAggregate();
if (loopSequence != nullptr && loopSequence->getOp() == EOpSequence)
loopSequence->setOp(EOpNull);
loopSequence = growAggregate(loopSequence, node);
loopSequence->setOperator(EOpSequence);

68
hlsl/hlslGrammar.cpp
View File

@ -3039,6 +3039,37 @@ bool HlslGrammar::acceptLiteral(TIntermTyped*& node)
return true;
}
// simple_statement
// : SEMICOLON
// | declaration_statement
// | expression SEMICOLON
//
bool HlslGrammar::acceptSimpleStatement(TIntermNode*& statement)
{
// SEMICOLON
if (acceptTokenClass(EHTokSemicolon))
return true;
// declaration
if (acceptDeclaration(statement))
return true;
// expression
TIntermTyped* node;
if (acceptExpression(node))
statement = node;
else
return false;
// SEMICOLON (following an expression)
if (acceptTokenClass(EHTokSemicolon))
return true;
else {
expected(";");
return false;
}
}
// compound_statement
// : LEFT_CURLY statement statement ... RIGHT_CURLY
//
@ -3096,12 +3127,11 @@ bool HlslGrammar::acceptScopedCompoundStatement(TIntermNode*& statement)
//
// attributed_statement
// : compound_statement
// | SEMICOLON
// | expression SEMICOLON
// | declaration_statement
// | simple_statement
// | selection_statement
// | switch_statement
// | case_label
// | default_label
// | iteration_statement
// | jump_statement
//
@ -3140,33 +3170,13 @@ bool HlslGrammar::acceptStatement(TIntermNode*& statement)
case EHTokDefault:
return acceptDefaultLabel(statement);
case EHTokSemicolon:
return acceptTokenClass(EHTokSemicolon);
case EHTokRightBrace:
// Performance: not strictly necessary, but stops a bunch of hunting early,
// and is how sequences of statements end.
return false;
default:
{
// declaration
if (acceptDeclaration(statement))
return true;
// expression
TIntermTyped* node;
if (acceptExpression(node))
statement = node;
else
return false;
// SEMICOLON (following an expression)
if (! acceptTokenClass(EHTokSemicolon)) {
expected(";");
return false;
}
}
return acceptSimpleStatement(statement);
}
return true;
@ -3420,14 +3430,8 @@ bool HlslGrammar::acceptIterationStatement(TIntermNode*& statement, const TAttri
// initializer
TIntermNode* initNode = nullptr;
if (! acceptControlDeclaration(initNode)) {
TIntermTyped* initExpr = nullptr;
acceptExpression(initExpr);
initNode = initExpr;
}
// SEMI_COLON
if (! acceptTokenClass(EHTokSemicolon))
expected(";");
if (! acceptSimpleStatement(initNode))
expected("for-loop initializer statement");
parseContext.nestLooping();

3
hlsl/hlslGrammar.h
View File

@ -108,10 +108,11 @@ namespace glslang {
bool acceptFunctionCall(const TSourceLoc&, TString& name, TIntermTyped*&, TIntermTyped* objectBase);
bool acceptArguments(TFunction*, TIntermTyped*&);
bool acceptLiteral(TIntermTyped*&);
bool acceptSimpleStatement(TIntermNode*&);
bool acceptCompoundStatement(TIntermNode*&);
bool acceptStatement(TIntermNode*&);
bool acceptScopedStatement(TIntermNode*&);
bool acceptScopedCompoundStatement(TIntermNode*&);
bool acceptStatement(TIntermNode*&);
bool acceptNestedStatement(TIntermNode*&);
void acceptAttributes(TAttributeMap&);
bool acceptSelectionStatement(TIntermNode*&);