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compiler: clean up pointer pack code

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This means runtime.alloc isn't allocated every time but instead only
when it is actually needed. It also just cleans up the compiler code a
little bit, and makes the next commit a bit nicer.
This commit is contained in:
Ayke van Laethem
2026-05-20 11:07:35 +02:00
committed by Ayke
parent da69f18e91
commit 7b486e398a
19 changed files with 380 additions and 429 deletions
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compiler/testdata/slice.ll
Vendored
+31 -31
View File
@@ -3,31 +3,28 @@ source_filename = "slice.go"
target datalayout = "e-m:e-p:32:32-p10:8:8-p20:8:8-i64:64-i128:128-n32:64-S128-ni:1:10:20"
target triple = "wasm32-unknown-wasi"
; 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) #1
declare void @runtime.trackPointer(ptr nocapture readonly, ptr, ptr) #0
; Function Attrs: nounwind
define hidden void @main.init(ptr %context) unnamed_addr #2 {
define hidden void @main.init(ptr %context) unnamed_addr #1 {
entry:
ret void
}
; Function Attrs: nounwind
define hidden i32 @main.sliceLen(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
define hidden i32 @main.sliceLen(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
entry:
ret i32 %ints.len
}
; Function Attrs: nounwind
define hidden i32 @main.sliceCap(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
define hidden i32 @main.sliceCap(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
entry:
ret i32 %ints.cap
}
; Function Attrs: nounwind
define hidden i32 @main.sliceElement(ptr %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, ptr %context) unnamed_addr #2 {
define hidden i32 @main.sliceElement(ptr %ints.data, i32 %ints.len, i32 %ints.cap, i32 %index, ptr %context) unnamed_addr #1 {
entry:
%.not = icmp ult i32 %index, %ints.len
br i1 %.not, label %lookup.next, label %lookup.throw
@@ -42,10 +39,10 @@ lookup.throw: ; preds = %entry
unreachable
}
declare void @runtime.lookupPanic(ptr) #1
declare void @runtime.lookupPanic(ptr) #0
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.sliceAppendValues(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.sliceAppendValues(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%varargs = call align 4 dereferenceable(12) ptr @runtime.alloc(i32 12, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
@@ -66,10 +63,13 @@ entry:
ret { ptr, i32, i32 } %4
}
declare { ptr, i32, i32 } @runtime.sliceAppend(ptr, ptr nocapture readonly, i32, i32, i32, i32, ptr, ptr) #1
; Function Attrs: allockind("alloc,zeroed") allocsize(0)
declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #2
declare { ptr, i32, i32 } @runtime.sliceAppend(ptr, ptr nocapture readonly, i32, i32, i32, i32, ptr, ptr) #0
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.sliceAppendSlice(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %added.data, i32 %added.len, i32 %added.cap, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.sliceAppendSlice(ptr %ints.data, i32 %ints.len, i32 %ints.cap, ptr %added.data, i32 %added.len, i32 %added.cap, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%append.new = call { ptr, i32, i32 } @runtime.sliceAppend(ptr %ints.data, ptr %added.data, i32 %ints.len, i32 %ints.cap, i32 %added.len, i32 4, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
@@ -84,7 +84,7 @@ entry:
}
; Function Attrs: nounwind
define hidden i32 @main.sliceCopy(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #2 {
define hidden i32 @main.sliceCopy(ptr %dst.data, i32 %dst.len, i32 %dst.cap, ptr %src.data, i32 %src.len, i32 %src.cap, ptr %context) unnamed_addr #1 {
entry:
%copy.n = call i32 @llvm.umin.i32(i32 %dst.len, i32 %src.len)
%copy.size = shl nuw i32 %copy.n, 2
@@ -99,7 +99,7 @@ declare i32 @llvm.umin.i32(i32, i32) #3
declare void @llvm.memmove.p0.p0.i32(ptr nocapture writeonly, ptr nocapture readonly, i32, i1 immarg) #4
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.makeByteSlice(i32 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.makeByteSlice(i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%slice.maxcap = icmp slt i32 %len, 0
@@ -118,10 +118,10 @@ slice.throw: ; preds = %entry
unreachable
}
declare void @runtime.slicePanic(ptr) #1
declare void @runtime.slicePanic(ptr) #0
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.makeInt16Slice(i32 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.makeInt16Slice(i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%slice.maxcap = icmp slt i32 %len, 0
@@ -142,7 +142,7 @@ slice.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.makeArraySlice(i32 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.makeArraySlice(i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%slice.maxcap = icmp ugt i32 %len, 1431655765
@@ -163,7 +163,7 @@ slice.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.makeInt32Slice(i32 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.makeInt32Slice(i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%slice.maxcap = icmp ugt i32 %len, 1073741823
@@ -184,7 +184,7 @@ slice.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden ptr @main.Add32(ptr %p, i32 %len, ptr %context) unnamed_addr #2 {
define hidden ptr @main.Add32(ptr %p, i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = getelementptr i8, ptr %p, i32 %len
@@ -193,7 +193,7 @@ entry:
}
; Function Attrs: nounwind
define hidden ptr @main.Add64(ptr %p, i64 %len, ptr %context) unnamed_addr #2 {
define hidden ptr @main.Add64(ptr %p, i64 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = trunc i64 %len to i32
@@ -203,7 +203,7 @@ entry:
}
; Function Attrs: nounwind
define hidden ptr @main.SliceToArray(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #2 {
define hidden ptr @main.SliceToArray(ptr %s.data, i32 %s.len, i32 %s.cap, ptr %context) unnamed_addr #1 {
entry:
%0 = icmp ult i32 %s.len, 4
br i1 %0, label %slicetoarray.throw, label %slicetoarray.next
@@ -216,10 +216,10 @@ slicetoarray.throw: ; preds = %entry
unreachable
}
declare void @runtime.sliceToArrayPointerPanic(ptr) #1
declare void @runtime.sliceToArrayPointerPanic(ptr) #0
; Function Attrs: nounwind
define hidden ptr @main.SliceToArrayConst(ptr %context) unnamed_addr #2 {
define hidden ptr @main.SliceToArrayConst(ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%makeslice = call align 4 dereferenceable(24) ptr @runtime.alloc(i32 24, ptr nonnull inttoptr (i32 3 to ptr), ptr undef) #5
@@ -234,7 +234,7 @@ slicetoarray.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.SliceInt(ptr dereferenceable_or_null(4) %ptr, i32 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.SliceInt(ptr dereferenceable_or_null(4) %ptr, i32 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = icmp ugt i32 %len, 1073741823
@@ -256,10 +256,10 @@ unsafe.Slice.throw: ; preds = %entry
unreachable
}
declare void @runtime.unsafeSlicePanic(ptr) #1
declare void @runtime.unsafeSlicePanic(ptr) #0
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.SliceUint16(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.SliceUint16(ptr dereferenceable_or_null(1) %ptr, i16 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = icmp eq ptr %ptr, null
@@ -281,7 +281,7 @@ unsafe.Slice.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.SliceUint64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.SliceUint64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = icmp ugt i64 %len, 1073741823
@@ -305,7 +305,7 @@ unsafe.Slice.throw: ; preds = %entry
}
; Function Attrs: nounwind
define hidden { ptr, i32, i32 } @main.SliceInt64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #2 {
define hidden { ptr, i32, i32 } @main.SliceInt64(ptr dereferenceable_or_null(4) %ptr, i64 %len, ptr %context) unnamed_addr #1 {
entry:
%stackalloc = alloca i8, align 1
%0 = icmp ugt i64 %len, 1073741823
@@ -328,9 +328,9 @@ unsafe.Slice.throw: ; preds = %entry
unreachable
}
attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #1 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #2 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #0 = { "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #1 = { nounwind "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #2 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+bulk-memory,+bulk-memory-opt,+call-indirect-overlong,+mutable-globals,+nontrapping-fptoint,+sign-ext,-multivalue,-reference-types" }
attributes #3 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }
attributes #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { nounwind }