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compiler: add alloc attributes to runtime.alloc

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This gives a small improvement now, and is needed to be able to use the
Heap2Stack transform that's available in the Attributor pass. This
Heap2Stack transform could replace our custom OptimizeAllocs pass.

Most of the changes are just IR that changed, the actual change is
relatively small.

To give an example of why this is useful, here is the code size before
this change:

    $ tinygo build -o test -size=short ./testdata/stdlib.go
       code    data     bss |   flash     ram
      95620    1812     968 |   97432    2780

    $ tinygo build -o test -size=short ./testdata/stdlib.go
       code    data     bss |   flash     ram
      95380    1812     968 |   97192    2780

That's a 0.25% reduction. Not a whole lot, but nice for such a small
patch.
This commit is contained in:
Ayke van Laethem
2023-03-11 20:57:40 +01:00
committed by Ron Evans
parent 5ed0cecf0d
commit f180339d6b
17 changed files with 504 additions and 447 deletions
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compiler/testdata/zeromap.ll
Vendored
+39 -37
View File
@@ -5,18 +5,19 @@ target triple = "wasm32-unknown-wasi"
%main.hasPadding = type { i1, i32, i1 }
; Function Attrs: allockind("alloc,zeroed") allocsize(0)
declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #1
; Function Attrs: nounwind
define hidden void @main.init(ptr %context) unnamed_addr #1 {
define hidden void @main.init(ptr %context) unnamed_addr #2 {
entry:
ret void
}
; Function Attrs: noinline nounwind
define hidden i32 @main.testZeroGet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #2 {
define hidden i32 @main.testZeroGet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #3 {
entry:
%hashmap.key = alloca %main.hasPadding, align 8
%hashmap.value = alloca i32, align 4
@@ -26,16 +27,16 @@ entry:
%2 = insertvalue %main.hasPadding %1, i1 %s.b2, 2
%stackalloc = alloca i8, align 1
store %main.hasPadding zeroinitializer, ptr %s, align 8
call void @runtime.trackPointer(ptr nonnull %s, ptr nonnull %stackalloc, ptr undef) #4
call void @runtime.trackPointer(ptr nonnull %s, ptr nonnull %stackalloc, ptr undef) #5
store %main.hasPadding %2, ptr %s, align 8
call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
store %main.hasPadding %2, ptr %hashmap.key, align 8
%3 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
%4 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #4
%5 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
%5 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
%6 = load i32, ptr %hashmap.value, align 4
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
@@ -43,17 +44,17 @@ entry:
}
; Function Attrs: argmemonly nocallback nofree nosync nounwind willreturn
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #3
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #4
declare void @runtime.memzero(ptr, i32, ptr) #0
declare void @runtime.memzero(ptr, i32, ptr) #1
declare i1 @runtime.hashmapBinaryGet(ptr dereferenceable_or_null(40), ptr, ptr, i32, ptr) #0
declare i1 @runtime.hashmapBinaryGet(ptr dereferenceable_or_null(40), ptr, ptr, i32, ptr) #1
; Function Attrs: argmemonly nocallback nofree nosync nounwind willreturn
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #3
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #4
; Function Attrs: noinline nounwind
define hidden void @main.testZeroSet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #2 {
define hidden void @main.testZeroSet(ptr dereferenceable_or_null(40) %m, i1 %s.b1, i32 %s.i, i1 %s.b2, ptr %context) unnamed_addr #3 {
entry:
%hashmap.key = alloca %main.hasPadding, align 8
%hashmap.value = alloca i32, align 4
@@ -63,26 +64,26 @@ entry:
%2 = insertvalue %main.hasPadding %1, i1 %s.b2, 2
%stackalloc = alloca i8, align 1
store %main.hasPadding zeroinitializer, ptr %s, align 8
call void @runtime.trackPointer(ptr nonnull %s, ptr nonnull %stackalloc, ptr undef) #4
call void @runtime.trackPointer(ptr nonnull %s, ptr nonnull %stackalloc, ptr undef) #5
store %main.hasPadding %2, ptr %s, align 8
call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %hashmap.value)
store i32 5, ptr %hashmap.value, align 4
call void @llvm.lifetime.start.p0(i64 12, ptr nonnull %hashmap.key)
store %main.hasPadding %2, ptr %hashmap.key, align 8
%3 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
%4 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #4
call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
call void @runtime.memzero(ptr nonnull %4, i32 3, ptr undef) #5
call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
call void @llvm.lifetime.end.p0(i64 12, ptr nonnull %hashmap.key)
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
ret void
}
declare void @runtime.hashmapBinarySet(ptr dereferenceable_or_null(40), ptr, ptr, ptr) #0
declare void @runtime.hashmapBinarySet(ptr dereferenceable_or_null(40), ptr, ptr, ptr) #1
; Function Attrs: noinline nounwind
define hidden i32 @main.testZeroArrayGet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #2 {
define hidden i32 @main.testZeroArrayGet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #3 {
entry:
%hashmap.key = alloca [2 x %main.hasPadding], align 8
%hashmap.value = alloca i32, align 4
@@ -91,7 +92,7 @@ entry:
store %main.hasPadding zeroinitializer, ptr %s1, align 8
%s1.repack2 = getelementptr inbounds [2 x %main.hasPadding], ptr %s1, i32 0, i32 1
store %main.hasPadding zeroinitializer, ptr %s1.repack2, align 4
call void @runtime.trackPointer(ptr nonnull %s1, ptr nonnull %stackalloc, ptr undef) #4
call void @runtime.trackPointer(ptr nonnull %s1, ptr nonnull %stackalloc, ptr undef) #5
%s.elt = extractvalue [2 x %main.hasPadding] %s, 0
store %main.hasPadding %s.elt, ptr %s1, align 8
%s1.repack3 = getelementptr inbounds [2 x %main.hasPadding], ptr %s1, i32 0, i32 1
@@ -105,14 +106,14 @@ entry:
%s.elt9 = extractvalue [2 x %main.hasPadding] %s, 1
store %main.hasPadding %s.elt9, ptr %hashmap.key.repack8, align 4
%0 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
%1 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
%2 = getelementptr inbounds i8, ptr %hashmap.key, i32 13
call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
%3 = getelementptr inbounds i8, ptr %hashmap.key, i32 21
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #4
%4 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #4
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
%4 = call i1 @runtime.hashmapBinaryGet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, i32 4, ptr undef) #5
call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
%5 = load i32, ptr %hashmap.value, align 4
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
@@ -120,7 +121,7 @@ entry:
}
; Function Attrs: noinline nounwind
define hidden void @main.testZeroArraySet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #2 {
define hidden void @main.testZeroArraySet(ptr dereferenceable_or_null(40) %m, [2 x %main.hasPadding] %s, ptr %context) unnamed_addr #3 {
entry:
%hashmap.key = alloca [2 x %main.hasPadding], align 8
%hashmap.value = alloca i32, align 4
@@ -129,7 +130,7 @@ entry:
store %main.hasPadding zeroinitializer, ptr %s1, align 8
%s1.repack2 = getelementptr inbounds [2 x %main.hasPadding], ptr %s1, i32 0, i32 1
store %main.hasPadding zeroinitializer, ptr %s1.repack2, align 4
call void @runtime.trackPointer(ptr nonnull %s1, ptr nonnull %stackalloc, ptr undef) #4
call void @runtime.trackPointer(ptr nonnull %s1, ptr nonnull %stackalloc, ptr undef) #5
%s.elt = extractvalue [2 x %main.hasPadding] %s, 0
store %main.hasPadding %s.elt, ptr %s1, align 8
%s1.repack3 = getelementptr inbounds [2 x %main.hasPadding], ptr %s1, i32 0, i32 1
@@ -144,27 +145,28 @@ entry:
%s.elt9 = extractvalue [2 x %main.hasPadding] %s, 1
store %main.hasPadding %s.elt9, ptr %hashmap.key.repack8, align 4
%0 = getelementptr inbounds i8, ptr %hashmap.key, i32 1
call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %0, i32 3, ptr undef) #5
%1 = getelementptr inbounds i8, ptr %hashmap.key, i32 9
call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %1, i32 3, ptr undef) #5
%2 = getelementptr inbounds i8, ptr %hashmap.key, i32 13
call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #4
call void @runtime.memzero(ptr nonnull %2, i32 3, ptr undef) #5
%3 = getelementptr inbounds i8, ptr %hashmap.key, i32 21
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #4
call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #4
call void @runtime.memzero(ptr nonnull %3, i32 3, ptr undef) #5
call void @runtime.hashmapBinarySet(ptr %m, ptr nonnull %hashmap.key, ptr nonnull %hashmap.value, ptr undef) #5
call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %hashmap.key)
call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %hashmap.value)
ret void
}
; Function Attrs: nounwind
define hidden void @main.main(ptr %context) unnamed_addr #1 {
define hidden void @main.main(ptr %context) unnamed_addr #2 {
entry:
ret void
}
attributes #0 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #1 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #2 = { noinline nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #3 = { argmemonly nocallback nofree nosync nounwind willreturn }
attributes #4 = { nounwind }
attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #1 = { "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #2 = { nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #3 = { noinline nounwind "target-features"="+bulk-memory,+nontrapping-fptoint,+sign-ext" }
attributes #4 = { argmemonly nocallback nofree nosync nounwind willreturn }
attributes #5 = { nounwind }