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compiler: move GC passes to the transform package

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This commit is contained in:
Ayke van Laethem
2019-11-17 20:37:45 +01:00
committed by Ron Evans
parent 3d3e48179e
commit f0bb3c092d
9 changed files with 611 additions and 359 deletions
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transform/testdata/gc-stackslots.out.ll
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+58
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@@ -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
}