e4da7b672f
This performs essentially the same simplifications as before, just at a different phase of compilation. Change-Id: Ia88df6857d4089962505cd1281798fda74fd0b02 Bug: skia:11343, skia:11319 Reviewed-on: https://skia-review.googlesource.com/c/skia/+/376177 Commit-Queue: John Stiles <johnstiles@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Ethan Nicholas <ethannicholas@google.com>
35 lines
761 B
Plaintext
35 lines
761 B
Plaintext
/*#pragma settings NoInline NoControlFlowAnalysis*/
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uniform half4 colorGreen, colorRed;
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half4 dead_fn(half4 a, half4 b) {
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return a * b;
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}
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half4 live_fn(half4 a, half4 b) {
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return a + b;
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}
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half4 main() {
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const bool TRUE = true, FALSE = false;
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half4 a, b;
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@if (FALSE) {
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// Dead stripping a user function.
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half4 unused = dead_fn(half4(0.5), half4(2));
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} else {
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// A live user function.
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a = live_fn(half4(3), half4(-5));
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}
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@if (TRUE) {
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// A live built-in function.
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b = unpremul(half4(1));
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} else {
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// Dead stripping a built-in function.
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float4 unused = unpremul_float(float4(-1));
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}
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return (a != half4(0) && b != half4(0)) ? colorGreen : colorRed;
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}
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