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SPV: Reduce spurious type generation by removing intermediate types in the middle of access chains.

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This generally simplifies access chain generation, with far fewer  type conversions.
It is particularly important to future SPIR-V changes where there is less aggregate
type uniqueness due to carrying different layout information with the type.
This commit is contained in:
John Kessenich 2015-09-13 14:46:30 -06:00
parent c9a808319a
commit fa668dad99
8 changed files with 144 additions and 137 deletions
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24
Test/baseResults/spv.accessChain.frag.out
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@ -86,7 +86,7 @@ Linked fragment stage:
67: 14(int) Constant 0
68: TypeInt 32 0
69: 68(int) Constant 0
97: TypeVector 7(float) 2
96: TypeVector 7(float) 2
110: 68(int) Constant 2
142: 7(float) Constant 0
143: 8(fvec3) ConstantComposite 142 142 142
@ -227,8 +227,8 @@ Linked fragment stage:
34(comp): 15(ptr) FunctionParameter
36: Label
95: 14(int) Load 34(comp)
96: 8(fvec3) CompositeExtract 33(i) 0
98: 97(fvec2) VectorShuffle 96 96 1 0
97: 8(fvec3) CompositeExtract 33(i) 0
98: 96(fvec2) VectorShuffle 97 97 1 0
99: 7(float) VectorExtractDynamic 98 95
100: 8(fvec3) Load 66(OutColor)
101: 8(fvec3) CompositeConstruct 99 99 99
@ -241,10 +241,10 @@ Linked fragment stage:
38(comp): 15(ptr) FunctionParameter
40: Label
103: 8(fvec3) CompositeExtract 37(i) 0
104: 97(fvec2) VectorShuffle 103 103 0 1
104: 96(fvec2) VectorShuffle 103 103 0 1
105: 8(fvec3) Load 66(OutColor)
106: 97(fvec2) VectorShuffle 105 105 0 1
107: 97(fvec2) FAdd 106 104
106: 96(fvec2) VectorShuffle 105 105 0 1
107: 96(fvec2) FAdd 106 104
108: 8(fvec3) Load 66(OutColor)
109: 8(fvec3) VectorShuffle 108 107 3 4 2
Store 66(OutColor) 109
@ -279,10 +279,10 @@ Linked fragment stage:
50(comp): 15(ptr) FunctionParameter
52: Label
121: 8(fvec3) CompositeExtract 49(i) 0
122: 97(fvec2) VectorShuffle 121 121 0 1
122: 96(fvec2) VectorShuffle 121 121 0 1
123: 8(fvec3) Load 66(OutColor)
124: 97(fvec2) VectorShuffle 123 123 2 1
125: 97(fvec2) FAdd 124 122
124: 96(fvec2) VectorShuffle 123 123 2 1
125: 96(fvec2) FAdd 124 122
126: 8(fvec3) Load 66(OutColor)
127: 8(fvec3) VectorShuffle 126 125 0 4 3
Store 66(OutColor) 127
@ -293,10 +293,10 @@ Linked fragment stage:
54(comp): 15(ptr) FunctionParameter
56: Label
128: 8(fvec3) CompositeExtract 53(i) 0
129: 97(fvec2) VectorShuffle 128 128 0 1
129: 96(fvec2) VectorShuffle 128 128 0 1
130: 8(fvec3) Load 66(OutColor)
131: 97(fvec2) VectorShuffle 130 130 0 2
132: 97(fvec2) FAdd 131 129
131: 96(fvec2) VectorShuffle 130 130 0 2
132: 96(fvec2) FAdd 131 129
133: 8(fvec3) Load 66(OutColor)
134: 8(fvec3) VectorShuffle 133 132 3 1 4
Store 66(OutColor) 134