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https://github.com/tinygo-org/tinygo.git
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all: add compiler support for interrupts
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
committed by
Ron Evans
Ron Evans
parent
3729fcfa9e
commit
a5ed993f8d
Vendored
+33
@@ -0,0 +1,33 @@
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target datalayout = "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8"
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target triple = "avr-atmel-none"
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%"runtime/interrupt.handle" = type { %runtime.funcValue, %"runtime/interrupt.Interrupt" } %runtime.funcValue = type { i8*, i16 }
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%runtime.typecodeID = type { %runtime.typecodeID*, i16 }
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%runtime.funcValueWithSignature = type { i16, %runtime.typecodeID* }
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%machine.UART = type { %machine.RingBuffer* }
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%machine.RingBuffer = type { [128 x %"runtime/volatile.Register8"], %"runtime/volatile.Register8", %"runtime/volatile.Register8" }
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%"runtime/volatile.Register8" = type { i8 }
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%"runtime/interrupt.Interrupt" = type { i32 }
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@"reflect/types.type:func:{named:runtime/interrupt.Interrupt}{}" = external constant %runtime.typecodeID
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@"(machine.UART).Configure$1$withSignature" = internal constant %runtime.funcValueWithSignature { i16 ptrtoint (void (i32, i8*, i8*) addrspace(1)* @"(machine.UART).Configure$1" to i16), %runtime.typecodeID* @"reflect/types.type:func:{named:runtime/interrupt.Interrupt}{}" }
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@"runtime/interrupt.$interrupt18" = private unnamed_addr constant %"runtime/interrupt.handle" { %runtime.funcValue { i8* undef, i16 ptrtoint (%runtime.funcValueWithSignature* @"(machine.UART).Configure$1$withSignature" to i16) }, %"runtime/interrupt.Interrupt" { i32 18 } }
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@machine.UART0 = internal global %machine.UART zeroinitializer
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@"device/avr.init$string.18" = internal unnamed_addr constant [17 x i8] c"__vector_USART_RX"
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declare void @"(machine.UART).Configure$1"(i32, i8*, i8*) unnamed_addr addrspace(1)
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declare i32 @"runtime/interrupt.Register"(i32, i8*, i16, i8*, i8*) addrspace(1)
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declare void @"runtime/interrupt.use"(%"runtime/interrupt.Interrupt") addrspace(1)
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define void @"(machine.UART).Configure"(%machine.RingBuffer*, i32, i8, i8, i8* %context, i8* %parentHandle) unnamed_addr addrspace(1) {
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call addrspace(1) void @"runtime/interrupt.use"(%"runtime/interrupt.Interrupt" { i32 ptrtoint (%"runtime/interrupt.handle"* @"runtime/interrupt.$interrupt18" to i32) })
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ret void
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}
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define void @"device/avr.init"(i8* %context, i8* %parentHandle) unnamed_addr addrspace(1) {
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entry:
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%0 = call addrspace(1) i32 @"runtime/interrupt.Register"(i32 18, i8* getelementptr inbounds ([17 x i8], [17 x i8]* @"device/avr.init$string.18", i32 0, i32 0), i16 17, i8* undef, i8* undef)
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ret void
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}
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+35
@@ -0,0 +1,35 @@
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target datalayout = "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8"
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target triple = "avr-atmel-none"
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%runtime.typecodeID = type { %runtime.typecodeID*, i16 }
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%runtime.funcValueWithSignature = type { i16, %runtime.typecodeID* }
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%machine.UART = type { %machine.RingBuffer* }
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%machine.RingBuffer = type { [128 x %"runtime/volatile.Register8"], %"runtime/volatile.Register8", %"runtime/volatile.Register8" }
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%"runtime/volatile.Register8" = type { i8 }
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%"runtime/interrupt.Interrupt" = type { i32 }
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@"reflect/types.type:func:{named:runtime/interrupt.Interrupt}{}" = external constant %runtime.typecodeID
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@"(machine.UART).Configure$1$withSignature" = internal constant %runtime.funcValueWithSignature { i16 ptrtoint (void (i32, i8*, i8*) addrspace(1)* @"(machine.UART).Configure$1" to i16), %runtime.typecodeID* @"reflect/types.type:func:{named:runtime/interrupt.Interrupt}{}" }
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@machine.UART0 = internal global %machine.UART zeroinitializer
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@"device/avr.init$string.18" = internal unnamed_addr constant [17 x i8] c"__vector_USART_RX"
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declare void @"(machine.UART).Configure$1"(i32, i8*, i8*) unnamed_addr addrspace(1)
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declare i32 @"runtime/interrupt.Register"(i32, i8*, i16, i8*, i8*) addrspace(1)
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declare void @"runtime/interrupt.use"(%"runtime/interrupt.Interrupt") addrspace(1)
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define void @"(machine.UART).Configure"(%machine.RingBuffer*, i32, i8, i8, i8* %context, i8* %parentHandle) unnamed_addr addrspace(1) {
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ret void
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}
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define void @"device/avr.init"(i8* %context, i8* %parentHandle) unnamed_addr addrspace(1) {
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entry:
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ret void
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}
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define avr_signalcc void @__vector_USART_RX() unnamed_addr addrspace(1) section ".text.__vector_USART_RX" {
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entry:
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call addrspace(1) void @"(machine.UART).Configure$1"(i32 18, i8* undef, i8* null)
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ret void
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}
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+38
@@ -0,0 +1,38 @@
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target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv7em-none-eabi"
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%machine.UART = type { %machine.RingBuffer* }
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%machine.RingBuffer = type { [128 x %"runtime/volatile.Register8"], %"runtime/volatile.Register8", %"runtime/volatile.Register8" }
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%"runtime/volatile.Register8" = type { i8 }
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%"runtime/interrupt.handle" = type { { i8*, void (i32, i8*, i8*)* }, %"runtime/interrupt.Interrupt" }
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%"runtime/interrupt.Interrupt" = type { i32 }
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@"runtime/interrupt.$interrupt2" = private unnamed_addr constant %"runtime/interrupt.handle" { { i8*, void (i32, i8*, i8*)* } { i8* bitcast (%machine.UART* @machine.UART0 to i8*), void (i32, i8*, i8*)* @"(*machine.UART).handleInterrupt$bound" }, %"runtime/interrupt.Interrupt" { i32 2 } }
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@machine.UART0 = internal global %machine.UART { %machine.RingBuffer* @"machine$alloc.335" }
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@"machine$alloc.335" = internal global %machine.RingBuffer zeroinitializer
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@"device/nrf.init$string.2" = internal unnamed_addr constant [23 x i8] c"UARTE0_UART0_IRQHandler"
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@"device/nrf.init$string.3" = internal unnamed_addr constant [44 x i8] c"SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler"
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declare i32 @"runtime/interrupt.Register"(i32, i8*, i32, i8*, i8*) local_unnamed_addr
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declare void @"device/arm.EnableIRQ"(i32, i8* nocapture readnone, i8* nocapture readnone)
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declare void @"device/arm.SetPriority"(i32, i32, i8* nocapture readnone, i8* nocapture readnone)
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define void @runtime.initAll(i8* nocapture readnone, i8* nocapture readnone) unnamed_addr {
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entry:
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%2 = call i32 @"runtime/interrupt.Register"(i32 2, i8* getelementptr inbounds ([23 x i8], [23 x i8]* @"device/nrf.init$string.2", i32 0, i32 0), i32 23, i8* undef, i8* undef)
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%3 = call i32 @"runtime/interrupt.Register"(i32 3, i8* getelementptr inbounds ([44 x i8], [44 x i8]* @"device/nrf.init$string.3", i32 0, i32 0), i32 44, i8* undef, i8* undef)
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call void @"device/arm.SetPriority"(i32 ptrtoint (%"runtime/interrupt.handle"* @"runtime/interrupt.$interrupt2" to i32), i32 192, i8* undef, i8* undef)
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call void @"device/arm.EnableIRQ"(i32 ptrtoint (%"runtime/interrupt.handle"* @"runtime/interrupt.$interrupt2" to i32), i8* undef, i8* undef)
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ret void
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}
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define internal void @"(*machine.UART).handleInterrupt$bound"(i32, i8* nocapture %context, i8* nocapture readnone %parentHandle) {
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entry:
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%unpack.ptr = bitcast i8* %context to %machine.UART*
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call void @"(*machine.UART).handleInterrupt"(%machine.UART* %unpack.ptr, i32 %0, i8* undef, i8* undef)
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ret void
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}
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declare void @"(*machine.UART).handleInterrupt"(%machine.UART* nocapture, i32, i8* nocapture readnone, i8* nocapture readnone)
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+39
@@ -0,0 +1,39 @@
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target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
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target triple = "armv7em-none-eabi"
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%machine.UART = type { %machine.RingBuffer* }
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%machine.RingBuffer = type { [128 x %"runtime/volatile.Register8"], %"runtime/volatile.Register8", %"runtime/volatile.Register8" }
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%"runtime/volatile.Register8" = type { i8 }
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@machine.UART0 = internal global %machine.UART { %machine.RingBuffer* @"machine$alloc.335" }
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@"machine$alloc.335" = internal global %machine.RingBuffer zeroinitializer
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@"device/nrf.init$string.2" = internal unnamed_addr constant [23 x i8] c"UARTE0_UART0_IRQHandler"
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@"device/nrf.init$string.3" = internal unnamed_addr constant [44 x i8] c"SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0_IRQHandler"
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declare i32 @"runtime/interrupt.Register"(i32, i8*, i32, i8*, i8*) local_unnamed_addr
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declare void @"device/arm.EnableIRQ"(i32, i8* nocapture readnone, i8* nocapture readnone)
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declare void @"device/arm.SetPriority"(i32, i32, i8* nocapture readnone, i8* nocapture readnone)
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define void @runtime.initAll(i8* nocapture readnone, i8* nocapture readnone) unnamed_addr {
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entry:
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call void @"device/arm.SetPriority"(i32 2, i32 192, i8* undef, i8* undef)
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call void @"device/arm.EnableIRQ"(i32 2, i8* undef, i8* undef)
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ret void
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}
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define internal void @"(*machine.UART).handleInterrupt$bound"(i32, i8* nocapture %context, i8* nocapture readnone %parentHandle) {
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entry:
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%unpack.ptr = bitcast i8* %context to %machine.UART*
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call void @"(*machine.UART).handleInterrupt"(%machine.UART* %unpack.ptr, i32 %0, i8* undef, i8* undef)
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ret void
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}
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declare void @"(*machine.UART).handleInterrupt"(%machine.UART* nocapture, i32, i8* nocapture readnone, i8* nocapture readnone)
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define void @UARTE0_UART0_IRQHandler() unnamed_addr section ".text.UARTE0_UART0_IRQHandler" {
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entry:
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call void @"(*machine.UART).handleInterrupt$bound"(i32 2, i8* bitcast (%machine.UART* @machine.UART0 to i8*), i8* null)
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ret void
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}
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