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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/defer-cortex-m-qemu.ll
Vendored
+23 -23
View File
@@ -6,19 +6,16 @@ target triple = "thumbv7m-unknown-unknown-eabi"
%runtime.deferFrame = type { ptr, ptr, [0 x ptr], ptr, i8, %runtime._interface }
%runtime._interface = type { ptr, ptr }
; Function Attrs: allockind("alloc,zeroed") allocsize(0)
declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #0
; Function Attrs: nounwind
define hidden void @main.init(ptr %context) unnamed_addr #1 {
define hidden void @main.init(ptr %context) unnamed_addr #0 {
entry:
ret void
}
declare void @main.external(ptr) #2
declare void @main.external(ptr) #1
; Function Attrs: nounwind
define hidden void @main.deferSimple(ptr %context) unnamed_addr #1 {
define hidden void @main.deferSimple(ptr %context) unnamed_addr #0 {
entry:
%defer.alloca = alloca { i32, ptr }, align 4
%deferPtr = alloca ptr, align 4
@@ -112,14 +109,14 @@ rundefers.end3: ; preds = %rundefers.loophead6
}
; Function Attrs: nocallback nofree nosync nounwind willreturn
declare ptr @llvm.stacksave.p0() #3
declare ptr @llvm.stacksave.p0() #2
declare void @runtime.setupDeferFrame(ptr dereferenceable_or_null(24), ptr, ptr) #2
declare void @runtime.setupDeferFrame(ptr dereferenceable_or_null(24), ptr, ptr) #1
declare void @runtime.destroyDeferFrame(ptr dereferenceable_or_null(24), ptr) #2
declare void @runtime.destroyDeferFrame(ptr dereferenceable_or_null(24), ptr) #1
; Function Attrs: nounwind
define internal void @"main.deferSimple$1"(ptr %context) unnamed_addr #1 {
define internal void @"main.deferSimple$1"(ptr %context) unnamed_addr #0 {
entry:
call void @runtime.printlock(ptr undef) #4
call void @runtime.printint32(i32 3, ptr undef) #4
@@ -127,14 +124,14 @@ entry:
ret void
}
declare void @runtime.printlock(ptr) #2
declare void @runtime.printlock(ptr) #1
declare void @runtime.printint32(i32, ptr) #2
declare void @runtime.printint32(i32, ptr) #1
declare void @runtime.printunlock(ptr) #2
declare void @runtime.printunlock(ptr) #1
; Function Attrs: nounwind
define hidden void @main.deferMultiple(ptr %context) unnamed_addr #1 {
define hidden void @main.deferMultiple(ptr %context) unnamed_addr #0 {
entry:
%defer.alloca2 = alloca { i32, ptr }, align 4
%defer.alloca = alloca { i32, ptr }, align 4
@@ -253,7 +250,7 @@ rundefers.end7: ; preds = %rundefers.loophead1
}
; Function Attrs: nounwind
define internal void @"main.deferMultiple$1"(ptr %context) unnamed_addr #1 {
define internal void @"main.deferMultiple$1"(ptr %context) unnamed_addr #0 {
entry:
call void @runtime.printlock(ptr undef) #4
call void @runtime.printint32(i32 3, ptr undef) #4
@@ -262,7 +259,7 @@ entry:
}
; Function Attrs: nounwind
define internal void @"main.deferMultiple$2"(ptr %context) unnamed_addr #1 {
define internal void @"main.deferMultiple$2"(ptr %context) unnamed_addr #0 {
entry:
call void @runtime.printlock(ptr undef) #4
call void @runtime.printint32(i32 5, ptr undef) #4
@@ -271,7 +268,7 @@ entry:
}
; Function Attrs: nounwind
define hidden void @main.deferInfiniteLoop(ptr %context) unnamed_addr #1 {
define hidden void @main.deferInfiniteLoop(ptr %context) unnamed_addr #0 {
entry:
%deferPtr = alloca ptr, align 4
store ptr null, ptr %deferPtr, align 4
@@ -315,8 +312,11 @@ rundefers.end: ; preds = %rundefers.loophead
br label %recover
}
; Function Attrs: allockind("alloc,zeroed") allocsize(0)
declare noalias nonnull ptr @runtime.alloc(i32, ptr, ptr) #3
; Function Attrs: nounwind
define hidden void @main.deferLoop(ptr %context) unnamed_addr #1 {
define hidden void @main.deferLoop(ptr %context) unnamed_addr #0 {
entry:
%deferPtr = alloca ptr, align 4
store ptr null, ptr %deferPtr, align 4
@@ -405,7 +405,7 @@ rundefers.end1: ; preds = %rundefers.loophead4
}
; Function Attrs: nounwind
define hidden void @main.deferBetweenLoops(ptr %context) unnamed_addr #1 {
define hidden void @main.deferBetweenLoops(ptr %context) unnamed_addr #0 {
entry:
%defer.alloca = alloca { i32, ptr, i32 }, align 4
%deferPtr = alloca ptr, align 4
@@ -505,9 +505,9 @@ rundefers.end4: ; preds = %rundefers.loophead7
br label %recover
}
attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #1 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #2 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #3 = { nocallback nofree nosync nounwind willreturn }
attributes #0 = { nounwind "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #1 = { "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #2 = { nocallback nofree nosync nounwind willreturn }
attributes #3 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+thumb-mode,-aes,-bf16,-cdecp0,-cdecp1,-cdecp2,-cdecp3,-cdecp4,-cdecp5,-cdecp6,-cdecp7,-crc,-crypto,-d32,-dotprod,-dsp,-fp-armv8,-fp-armv8d16,-fp-armv8d16sp,-fp-armv8sp,-fp16,-fp16fml,-fp64,-fpregs,-fullfp16,-hwdiv-arm,-i8mm,-lob,-mve,-mve.fp,-neon,-pacbti,-ras,-sb,-sha2,-vfp2,-vfp2sp,-vfp3,-vfp3d16,-vfp3d16sp,-vfp3sp,-vfp4,-vfp4d16,-vfp4d16sp,-vfp4sp" }
attributes #4 = { nounwind }
attributes #5 = { nounwind returns_twice }