mirror of
https://github.com/tinygo-org/tinygo.git
synced 2026-08-08 13:03:39 +00:00
compiler: move GC passes to the transform package
This commit is contained in:
Ayke van Laethem
committed by
Ron Evans
Ron Evans
parent
3d3e48179e
commit
f0bb3c092d
Vendored
+29
@@ -0,0 +1,29 @@
|
||||
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||||
target triple = "wasm32-unknown-unknown-wasm"
|
||||
|
||||
%runtime._string = type { i8*, i32 }
|
||||
%runtime._interface = type { i32, i8* }
|
||||
|
||||
@globalInt = constant i32 5
|
||||
@globalString = constant %runtime._string zeroinitializer
|
||||
@globalInterface = constant %runtime._interface zeroinitializer
|
||||
@runtime.trackedGlobalsLength = external global i32
|
||||
@runtime.trackedGlobalsBitmap = external global [0 x i8]
|
||||
@runtime.trackedGlobalsStart = external global i32
|
||||
|
||||
define void @main() {
|
||||
%1 = load i32, i32* @globalInt
|
||||
%2 = load %runtime._string, %runtime._string* @globalString
|
||||
%3 = load %runtime._interface, %runtime._interface* @globalInterface
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @runtime.markGlobals() {
|
||||
; Very small subset of what runtime.markGlobals would really do.
|
||||
; Just enough to make sure the transformation is correct.
|
||||
%1 = load i32, i32* @runtime.trackedGlobalsStart
|
||||
%2 = load i32, i32* @runtime.trackedGlobalsLength
|
||||
%3 = getelementptr inbounds [0 x i8], [0 x i8]* @runtime.trackedGlobalsBitmap, i32 0, i32 0
|
||||
%4 = load i8, i8* %3
|
||||
ret void
|
||||
}
|
||||
Vendored
+27
@@ -0,0 +1,27 @@
|
||||
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||||
target triple = "wasm32-unknown-unknown-wasm"
|
||||
|
||||
%runtime._string = type { i8*, i32 }
|
||||
%runtime._interface = type { i32, i8* }
|
||||
|
||||
@globalInt = constant i32 5
|
||||
@runtime.trackedGlobalsLength = global i32 4
|
||||
@runtime.trackedGlobalsBitmap = external global [0 x i8]
|
||||
@runtime.trackedGlobalsStart = global i32 ptrtoint ({ %runtime._string, %runtime._interface }* @tinygo.trackedGlobals to i32)
|
||||
@tinygo.trackedGlobals = internal unnamed_addr global { %runtime._string, %runtime._interface } zeroinitializer
|
||||
@runtime.trackedGlobalsBitmap.1 = global [1 x i8] c"\09"
|
||||
|
||||
define void @main() {
|
||||
%1 = load i32, i32* @globalInt
|
||||
%2 = load %runtime._string, %runtime._string* getelementptr inbounds ({ %runtime._string, %runtime._interface }, { %runtime._string, %runtime._interface }* @tinygo.trackedGlobals, i32 0, i32 0)
|
||||
%3 = load %runtime._interface, %runtime._interface* getelementptr inbounds ({ %runtime._string, %runtime._interface }, { %runtime._string, %runtime._interface }* @tinygo.trackedGlobals, i32 0, i32 1)
|
||||
ret void
|
||||
}
|
||||
|
||||
define void @runtime.markGlobals() {
|
||||
%1 = load i32, i32* @runtime.trackedGlobalsStart
|
||||
%2 = load i32, i32* @runtime.trackedGlobalsLength
|
||||
%3 = getelementptr inbounds [0 x i8], [0 x i8]* bitcast ([1 x i8]* @runtime.trackedGlobalsBitmap.1 to [0 x i8]*), i32 0, i32 0
|
||||
%4 = load i8, i8* %3
|
||||
ret void
|
||||
}
|
||||
Vendored
+52
@@ -0,0 +1,52 @@
|
||||
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||||
target triple = "wasm32-unknown-unknown-wasm"
|
||||
|
||||
%runtime.stackChainObject = type { %runtime.stackChainObject*, i32 }
|
||||
|
||||
@runtime.stackChainStart = external global %runtime.stackChainObject*
|
||||
@someGlobal = global i8 3
|
||||
|
||||
declare void @runtime.trackPointer(i8* nocapture readonly)
|
||||
|
||||
declare noalias nonnull i8* @runtime.alloc(i32)
|
||||
|
||||
; Generic function that returns a pointer (that must be tracked).
|
||||
define i8* @getPointer() {
|
||||
ret i8* @someGlobal
|
||||
}
|
||||
|
||||
define i8* @needsStackSlots() {
|
||||
; Tracked pointer. Although, in this case the value is immediately returned
|
||||
; so tracking it is not really necessary.
|
||||
%ptr = call i8* @runtime.alloc(i32 4)
|
||||
call void @runtime.trackPointer(i8* %ptr)
|
||||
ret i8* %ptr
|
||||
}
|
||||
|
||||
; Check some edge cases of pointer tracking.
|
||||
define i8* @needsStackSlots2() {
|
||||
; Only one stack slot should be created for this (but at the moment, one is
|
||||
; created for each call to runtime.trackPointer).
|
||||
%ptr1 = call i8* @getPointer()
|
||||
call void @runtime.trackPointer(i8* %ptr1)
|
||||
call void @runtime.trackPointer(i8* %ptr1)
|
||||
call void @runtime.trackPointer(i8* %ptr1)
|
||||
|
||||
; Create a pointer that does not need to be tracked (but is tracked).
|
||||
%ptr2 = getelementptr i8, i8* @someGlobal, i32 0
|
||||
call void @runtime.trackPointer(i8* %ptr2)
|
||||
|
||||
; Here is finally the point where an allocation happens.
|
||||
%unused = call i8* @runtime.alloc(i32 4)
|
||||
call void @runtime.trackPointer(i8* %unused)
|
||||
|
||||
ret i8* %ptr1
|
||||
}
|
||||
|
||||
; Return a pointer from a caller. Because it doesn't allocate, no stack objects
|
||||
; need to be created.
|
||||
define i8* @noAllocatingFunction() {
|
||||
%ptr = call i8* @getPointer()
|
||||
call void @runtime.trackPointer(i8* %ptr)
|
||||
ret i8* %ptr
|
||||
}
|
||||
+58
@@ -0,0 +1,58 @@
|
||||
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
|
||||
target triple = "wasm32-unknown-unknown-wasm"
|
||||
|
||||
%runtime.stackChainObject = type { %runtime.stackChainObject*, i32 }
|
||||
|
||||
@runtime.stackChainStart = global %runtime.stackChainObject* null
|
||||
@someGlobal = global i8 3
|
||||
|
||||
declare void @runtime.trackPointer(i8* nocapture readonly)
|
||||
|
||||
declare noalias nonnull i8* @runtime.alloc(i32)
|
||||
|
||||
define i8* @getPointer() {
|
||||
ret i8* @someGlobal
|
||||
}
|
||||
|
||||
define i8* @needsStackSlots() {
|
||||
%gc.stackobject = alloca { %runtime.stackChainObject*, i32, i8* }
|
||||
store { %runtime.stackChainObject*, i32, i8* } { %runtime.stackChainObject* null, i32 1, i8* null }, { %runtime.stackChainObject*, i32, i8* }* %gc.stackobject
|
||||
%1 = load %runtime.stackChainObject*, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
%2 = getelementptr { %runtime.stackChainObject*, i32, i8* }, { %runtime.stackChainObject*, i32, i8* }* %gc.stackobject, i32 0, i32 0
|
||||
store %runtime.stackChainObject* %1, %runtime.stackChainObject** %2
|
||||
%3 = bitcast { %runtime.stackChainObject*, i32, i8* }* %gc.stackobject to %runtime.stackChainObject*
|
||||
store %runtime.stackChainObject* %3, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
%ptr = call i8* @runtime.alloc(i32 4)
|
||||
%4 = getelementptr { %runtime.stackChainObject*, i32, i8* }, { %runtime.stackChainObject*, i32, i8* }* %gc.stackobject, i32 0, i32 2
|
||||
store i8* %ptr, i8** %4
|
||||
store %runtime.stackChainObject* %1, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
ret i8* %ptr
|
||||
}
|
||||
|
||||
define i8* @needsStackSlots2() {
|
||||
%gc.stackobject = alloca { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }
|
||||
store { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* } { %runtime.stackChainObject* null, i32 4, i8* null, i8* null, i8* null, i8* null }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject
|
||||
%1 = load %runtime.stackChainObject*, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
%2 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 0
|
||||
store %runtime.stackChainObject* %1, %runtime.stackChainObject** %2
|
||||
%3 = bitcast { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject to %runtime.stackChainObject*
|
||||
store %runtime.stackChainObject* %3, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
%ptr1 = call i8* @getPointer()
|
||||
%4 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 4
|
||||
store i8* %ptr1, i8** %4
|
||||
%5 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 3
|
||||
store i8* %ptr1, i8** %5
|
||||
%6 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 2
|
||||
store i8* %ptr1, i8** %6
|
||||
%ptr2 = getelementptr i8, i8* @someGlobal, i32 0
|
||||
%unused = call i8* @runtime.alloc(i32 4)
|
||||
%7 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 5
|
||||
store i8* %unused, i8** %7
|
||||
store %runtime.stackChainObject* %1, %runtime.stackChainObject** @runtime.stackChainStart
|
||||
ret i8* %ptr1
|
||||
}
|
||||
|
||||
define i8* @noAllocatingFunction() {
|
||||
%ptr = call i8* @getPointer()
|
||||
ret i8* %ptr
|
||||
}
|
||||
Reference in New Issue
Block a user