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Code Issues Packages Projects Releases 6 Wiki Activity

transform (gc): track phi nodes in stack slots

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This commit is contained in:
Jaden Weiss
2020-04-01 17:18:57 -04:00
committed by Ayke
parent 6647c43a7b
commit ae16b2c922
3 changed files with 106 additions and 2 deletions
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transform/testdata/gc-stackslots.ll
Vendored
+34
View File
@@ -50,3 +50,37 @@ define i8* @noAllocatingFunction() {
call void @runtime.trackPointer(i8* %ptr)
ret i8* %ptr
}
define i8* @fibNext(i8* %x, i8* %y) {
%x.val = load i8, i8* %x
%y.val = load i8, i8* %y
%out.val = add i8 %x.val, %y.val
%out.alloc = call i8* @runtime.alloc(i32 1)
call void @runtime.trackPointer(i8* %out.alloc)
store i8 %out.val, i8* %out.alloc
ret i8* %out.alloc
}
define i8* @allocLoop() {
entry:
%entry.x = call i8* @runtime.alloc(i32 1)
call void @runtime.trackPointer(i8* %entry.x)
%entry.y = call i8* @runtime.alloc(i32 1)
call void @runtime.trackPointer(i8* %entry.y)
store i8 1, i8* %entry.y
br label %loop
loop:
%prev.y = phi i8* [ %entry.y, %entry ], [ %prev.x, %loop ]
%prev.x = phi i8* [ %entry.x, %entry ], [ %next.x, %loop ]
call void @runtime.trackPointer(i8* %prev.x)
call void @runtime.trackPointer(i8* %prev.y)
%next.x = call i8* @fibNext(i8* %prev.x, i8* %prev.y)
call void @runtime.trackPointer(i8* %next.x)
%next.x.val = load i8, i8* %next.x
%loop.done = icmp ult i8 40, %next.x.val
br i1 %loop.done, label %end, label %loop
end:
ret i8* %next.x
}
transform/testdata/gc-stackslots.out.ll
Vendored
+56
View File
@@ -56,3 +56,59 @@ define i8* @noAllocatingFunction() {
%ptr = call i8* @getPointer()
ret i8* %ptr
}
define i8* @fibNext(i8* %x, i8* %y) {
%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
%x.val = load i8, i8* %x
%y.val = load i8, i8* %y
%out.val = add i8 %x.val, %y.val
%out.alloc = call i8* @runtime.alloc(i32 1)
%4 = getelementptr { %runtime.stackChainObject*, i32, i8* }, { %runtime.stackChainObject*, i32, i8* }* %gc.stackobject, i32 0, i32 2
store i8* %out.alloc, i8** %4
store i8 %out.val, i8* %out.alloc
store %runtime.stackChainObject* %1, %runtime.stackChainObject** @runtime.stackChainStart
ret i8* %out.alloc
}
define i8* @allocLoop() {
entry:
%gc.stackobject = alloca { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }
store { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* } { %runtime.stackChainObject* null, i32 5, i8* null, i8* null, i8* null, i8* null, i8* null }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject
%0 = load %runtime.stackChainObject*, %runtime.stackChainObject** @runtime.stackChainStart
%1 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 0
store %runtime.stackChainObject* %0, %runtime.stackChainObject** %1
%2 = bitcast { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject to %runtime.stackChainObject*
store %runtime.stackChainObject* %2, %runtime.stackChainObject** @runtime.stackChainStart
%entry.x = call i8* @runtime.alloc(i32 1)
%3 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 2
store i8* %entry.x, i8** %3
%entry.y = call i8* @runtime.alloc(i32 1)
%4 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 3
store i8* %entry.y, i8** %4
store i8 1, i8* %entry.y
br label %loop
loop:
%prev.y = phi i8* [ %entry.y, %entry ], [ %prev.x, %loop ]
%prev.x = phi i8* [ %entry.x, %entry ], [ %next.x, %loop ]
%5 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 5
store i8* %prev.y, i8** %5
%6 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 4
store i8* %prev.x, i8** %6
%next.x = call i8* @fibNext(i8* %prev.x, i8* %prev.y)
%7 = getelementptr { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }, { %runtime.stackChainObject*, i32, i8*, i8*, i8*, i8*, i8* }* %gc.stackobject, i32 0, i32 6
store i8* %next.x, i8** %7
%next.x.val = load i8, i8* %next.x
%loop.done = icmp ult i8 40, %next.x.val
br i1 %loop.done, label %end, label %loop
end:
store %runtime.stackChainObject* %0, %runtime.stackChainObject** @runtime.stackChainStart
ret i8* %next.x
}