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all: add compiler support for interrupts

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This commit lets the compiler know about interrupts and allows
optimizations to be performed based on that: interrupts are eliminated
when they appear to be unused in a program. This is done with a new
pseudo-call (runtime/interrupt.New) that is treated specially by the
compiler.
This commit is contained in:
Ayke van Laethem
2019-12-15 14:16:22 +01:00
committed by Ron Evans
parent 3729fcfa9e
commit a5ed993f8d
36 changed files with 766 additions and 199 deletions
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compiler/optimizer.go
+10
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@@ -57,6 +57,12 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) []er
transform.OptimizeStringToBytes(c.mod)
transform.OptimizeAllocs(c.mod)
transform.LowerInterfaces(c.mod)
errs := transform.LowerInterrupts(c.mod)
if len(errs) > 0 {
return errs
}
if c.funcImplementation() == funcValueSwitch {
transform.LowerFuncValues(c.mod)
}
@@ -100,6 +106,10 @@ func (c *Compiler) Optimize(optLevel, sizeLevel int, inlinerThreshold uint) []er
if err != nil {
return []error{err}
}
errs := transform.LowerInterrupts(c.mod)
if len(errs) > 0 {
return errs
}
}
if c.VerifyIR() {
if errs := c.checkModule(); errs != nil {