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SPV return from main: Simplify a legacy design such returns are not jumps to exit block.

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Structured control-flow rules allow leaving the middle of a construct through
a return, but not through a jump to a block that does a return.

Addresses issue #58.
This commit is contained in:
John Kessenich 2015-09-14 20:58:02 -06:00
parent 5f5b205ce9
commit e770b3e6cf
74 changed files with 9648 additions and 9816 deletions
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92
Test/baseResults/spv.330.geom.out
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@ -5,7 +5,7 @@ Linked geometry stage:
// Module Version 99
// Generated by (magic number): 51a00bb
// Id's are bound by 33
// Id's are bound by 32
Source GLSL 330
SourceExtension "GL_ARB_separate_shader_objects"
@ -18,57 +18,55 @@ Linked geometry stage:
ExecutionMode 4 OutputTriangleStrip
ExecutionMode 4 OutputVertices 3
Name 4 "main"
Name 12 "gl_PerVertex"
MemberName 12(gl_PerVertex) 0 "gl_Position"
MemberName 12(gl_PerVertex) 1 "gl_ClipDistance"
Name 14 ""
Name 17 "gl_PerVertex"
MemberName 17(gl_PerVertex) 0 "gl_Position"
MemberName 17(gl_PerVertex) 1 "gl_ClipDistance"
Name 21 "gl_in"
MemberDecorate 12(gl_PerVertex) 0 BuiltIn Position
MemberDecorate 12(gl_PerVertex) 1 BuiltIn ClipDistance
Decorate 12(gl_PerVertex) Block
Decorate 12(gl_PerVertex) Stream 0
Decorate 14 Stream 0
MemberDecorate 17(gl_PerVertex) 0 BuiltIn Position
MemberDecorate 17(gl_PerVertex) 1 BuiltIn ClipDistance
Decorate 17(gl_PerVertex) Block
Name 11 "gl_PerVertex"
MemberName 11(gl_PerVertex) 0 "gl_Position"
MemberName 11(gl_PerVertex) 1 "gl_ClipDistance"
Name 13 ""
Name 16 "gl_PerVertex"
MemberName 16(gl_PerVertex) 0 "gl_Position"
MemberName 16(gl_PerVertex) 1 "gl_ClipDistance"
Name 20 "gl_in"
MemberDecorate 11(gl_PerVertex) 0 BuiltIn Position
MemberDecorate 11(gl_PerVertex) 1 BuiltIn ClipDistance
Decorate 11(gl_PerVertex) Block
Decorate 11(gl_PerVertex) Stream 0
Decorate 13 Stream 0
MemberDecorate 16(gl_PerVertex) 0 BuiltIn Position
MemberDecorate 16(gl_PerVertex) 1 BuiltIn ClipDistance
Decorate 16(gl_PerVertex) Block
2: TypeVoid
3: TypeFunction 2
7: TypeFloat 32
8: TypeVector 7(float) 4
9: TypeInt 32 0
10: 9(int) Constant 1
11: TypeArray 7(float) 10
12(gl_PerVertex): TypeStruct 8(fvec4) 11
13: TypePointer Output 12(gl_PerVertex)
14: 13(ptr) Variable Output
15: TypeInt 32 1
16: 15(int) Constant 0
17(gl_PerVertex): TypeStruct 8(fvec4) 11
18: 9(int) Constant 3
19: TypeArray 17(gl_PerVertex) 18
20: TypePointer Input 19
21(gl_in): 20(ptr) Variable Input
22: 15(int) Constant 1
23: TypePointer Input 8(fvec4)
26: TypePointer Output 8(fvec4)
28: TypePointer Input 7(float)
31: TypePointer Output 7(float)
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypeInt 32 0
9: 8(int) Constant 1
10: TypeArray 6(float) 9
11(gl_PerVertex): TypeStruct 7(fvec4) 10
12: TypePointer Output 11(gl_PerVertex)
13: 12(ptr) Variable Output
14: TypeInt 32 1
15: 14(int) Constant 0
16(gl_PerVertex): TypeStruct 7(fvec4) 10
17: 8(int) Constant 3
18: TypeArray 16(gl_PerVertex) 17
19: TypePointer Input 18
20(gl_in): 19(ptr) Variable Input
21: 14(int) Constant 1
22: TypePointer Input 7(fvec4)
25: TypePointer Output 7(fvec4)
27: TypePointer Input 6(float)
30: TypePointer Output 6(float)
4(main): 2 Function None 3
5: Label
24: 23(ptr) AccessChain 21(gl_in) 22 16
25: 8(fvec4) Load 24
27: 26(ptr) AccessChain 14 16
Store 27 25
29: 28(ptr) AccessChain 21(gl_in) 22 22 16
30: 7(float) Load 29
32: 31(ptr) AccessChain 14 22 16
Store 32 30
23: 22(ptr) AccessChain 20(gl_in) 21 15
24: 7(fvec4) Load 23
26: 25(ptr) AccessChain 13 15
Store 26 24
28: 27(ptr) AccessChain 20(gl_in) 21 21 15
29: 6(float) Load 28
31: 30(ptr) AccessChain 13 21 15
Store 31 29
EmitVertex
EndPrimitive
Branch 6
6: Label
Return
FunctionEnd