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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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56
Test/baseResults/spv.simpleFunctionCall.frag.out
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@@ -7,7 +7,7 @@ Linked fragment stage:
// Module Version 99
// Generated by (magic number): 51a00bb
// Id's are bound by 23
// Id's are bound by 22
Source GLSL 150
Capability Shader
@@ -16,38 +16,36 @@ Linked fragment stage:
EntryPoint Fragment 4 "main"
ExecutionMode 4 OriginLowerLeft
Name 4 "main"
Name 10 "foo("
Name 13 "BaseColor"
Name 17 "gl_FragColor"
Name 20 "bigColor"
Name 22 "d"
Decorate 13(BaseColor) Smooth
Decorate 17(gl_FragColor) BuiltIn FragColor
Decorate 20(bigColor) NoStaticUse
Decorate 22(d) NoStaticUse
Name 9 "foo("
Name 12 "BaseColor"
Name 16 "gl_FragColor"
Name 19 "bigColor"
Name 21 "d"
Decorate 12(BaseColor) Smooth
Decorate 16(gl_FragColor) BuiltIn FragColor
Decorate 19(bigColor) NoStaticUse
Decorate 21(d) NoStaticUse
2: TypeVoid
3: TypeFunction 2
7: TypeFloat 32
8: TypeVector 7(float) 4
9: TypeFunction 8(fvec4)
12: TypePointer Input 8(fvec4)
13(BaseColor): 12(ptr) Variable Input
16: TypePointer Output 8(fvec4)
17(gl_FragColor): 16(ptr) Variable Output
19: TypePointer UniformConstant 8(fvec4)
20(bigColor): 19(ptr) Variable UniformConstant
21: TypePointer UniformConstant 7(float)
22(d): 21(ptr) Variable UniformConstant
6: TypeFloat 32
7: TypeVector 6(float) 4
8: TypeFunction 7(fvec4)
11: TypePointer Input 7(fvec4)
12(BaseColor): 11(ptr) Variable Input
15: TypePointer Output 7(fvec4)
16(gl_FragColor): 15(ptr) Variable Output
18: TypePointer UniformConstant 7(fvec4)
19(bigColor): 18(ptr) Variable UniformConstant
20: TypePointer UniformConstant 6(float)
21(d): 20(ptr) Variable UniformConstant
4(main): 2 Function None 3
5: Label
18: 8(fvec4) FunctionCall 10(foo()
Store 17(gl_FragColor) 18
Branch 6
6: Label
17: 7(fvec4) FunctionCall 9(foo()
Store 16(gl_FragColor) 17
Return
FunctionEnd
10(foo(): 8(fvec4) Function None 9
11: Label
14: 8(fvec4) Load 13(BaseColor)
ReturnValue 14
9(foo(): 7(fvec4) Function None 8
10: Label
13: 7(fvec4) Load 12(BaseColor)
ReturnValue 13
FunctionEnd