f180339d6b
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.
257 строки
13 КиБ
LLVM
257 строки
13 КиБ
LLVM
; ModuleID = 'defer.go'
|
|
source_filename = "defer.go"
|
|
target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
|
|
target triple = "thumbv7m-unknown-unknown-eabi"
|
|
|
|
%runtime.deferFrame = type { ptr, ptr, [0 x ptr], ptr, i1, %runtime._interface }
|
|
%runtime._interface = type { ptr, ptr }
|
|
%runtime._defer = type { i32, 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 {
|
|
entry:
|
|
ret void
|
|
}
|
|
|
|
declare void @main.external(ptr) #2
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.deferSimple(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%defer.alloca = alloca { i32, ptr }, align 4
|
|
%deferPtr = alloca ptr, align 4
|
|
store ptr null, ptr %deferPtr, align 4
|
|
%deferframe.buf = alloca %runtime.deferFrame, align 4
|
|
%0 = call ptr @llvm.stacksave()
|
|
call void @runtime.setupDeferFrame(ptr nonnull %deferframe.buf, ptr %0, ptr undef) #4
|
|
store i32 0, ptr %defer.alloca, align 4
|
|
%defer.alloca.repack15 = getelementptr inbounds { i32, ptr }, ptr %defer.alloca, i32 0, i32 1
|
|
store ptr null, ptr %defer.alloca.repack15, align 4
|
|
store ptr %defer.alloca, ptr %deferPtr, align 4
|
|
%setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result = icmp eq i32 %setjmp, 0
|
|
br i1 %setjmp.result, label %1, label %lpad
|
|
|
|
1: ; preds = %entry
|
|
call void @main.external(ptr undef) #4
|
|
br label %rundefers.loophead
|
|
|
|
rundefers.loophead: ; preds = %3, %1
|
|
%2 = load ptr, ptr %deferPtr, align 4
|
|
%stackIsNil = icmp eq ptr %2, null
|
|
br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
|
|
|
|
rundefers.loop: ; preds = %rundefers.loophead
|
|
%stack.next.gep = getelementptr inbounds %runtime._defer, ptr %2, i32 0, i32 1
|
|
%stack.next = load ptr, ptr %stack.next.gep, align 4
|
|
store ptr %stack.next, ptr %deferPtr, align 4
|
|
%callback = load i32, ptr %2, align 4
|
|
switch i32 %callback, label %rundefers.default [
|
|
i32 0, label %rundefers.callback0
|
|
]
|
|
|
|
rundefers.callback0: ; preds = %rundefers.loop
|
|
%setjmp1 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result2 = icmp eq i32 %setjmp1, 0
|
|
br i1 %setjmp.result2, label %3, label %lpad
|
|
|
|
3: ; preds = %rundefers.callback0
|
|
call void @"main.deferSimple$1"(ptr undef)
|
|
br label %rundefers.loophead
|
|
|
|
rundefers.default: ; preds = %rundefers.loop
|
|
unreachable
|
|
|
|
rundefers.end: ; preds = %rundefers.loophead
|
|
call void @runtime.destroyDeferFrame(ptr nonnull %deferframe.buf, ptr undef) #4
|
|
ret void
|
|
|
|
recover: ; preds = %rundefers.end3
|
|
call void @runtime.destroyDeferFrame(ptr nonnull %deferframe.buf, ptr undef) #4
|
|
ret void
|
|
|
|
lpad: ; preds = %rundefers.callback012, %rundefers.callback0, %entry
|
|
br label %rundefers.loophead6
|
|
|
|
rundefers.loophead6: ; preds = %5, %lpad
|
|
%4 = load ptr, ptr %deferPtr, align 4
|
|
%stackIsNil7 = icmp eq ptr %4, null
|
|
br i1 %stackIsNil7, label %rundefers.end3, label %rundefers.loop5
|
|
|
|
rundefers.loop5: ; preds = %rundefers.loophead6
|
|
%stack.next.gep8 = getelementptr inbounds %runtime._defer, ptr %4, i32 0, i32 1
|
|
%stack.next9 = load ptr, ptr %stack.next.gep8, align 4
|
|
store ptr %stack.next9, ptr %deferPtr, align 4
|
|
%callback11 = load i32, ptr %4, align 4
|
|
switch i32 %callback11, label %rundefers.default4 [
|
|
i32 0, label %rundefers.callback012
|
|
]
|
|
|
|
rundefers.callback012: ; preds = %rundefers.loop5
|
|
%setjmp13 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result14 = icmp eq i32 %setjmp13, 0
|
|
br i1 %setjmp.result14, label %5, label %lpad
|
|
|
|
5: ; preds = %rundefers.callback012
|
|
call void @"main.deferSimple$1"(ptr undef)
|
|
br label %rundefers.loophead6
|
|
|
|
rundefers.default4: ; preds = %rundefers.loop5
|
|
unreachable
|
|
|
|
rundefers.end3: ; preds = %rundefers.loophead6
|
|
br label %recover
|
|
}
|
|
|
|
; Function Attrs: nocallback nofree nosync nounwind willreturn
|
|
declare ptr @llvm.stacksave() #3
|
|
|
|
declare void @runtime.setupDeferFrame(ptr dereferenceable_or_null(24), ptr, ptr) #2
|
|
|
|
; Function Attrs: nounwind
|
|
define internal void @"main.deferSimple$1"(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
call void @runtime.printint32(i32 3, ptr undef) #4
|
|
ret void
|
|
}
|
|
|
|
declare void @runtime.destroyDeferFrame(ptr dereferenceable_or_null(24), ptr) #2
|
|
|
|
declare void @runtime.printint32(i32, ptr) #2
|
|
|
|
; Function Attrs: nounwind
|
|
define hidden void @main.deferMultiple(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
%defer.alloca2 = alloca { i32, ptr }, align 4
|
|
%defer.alloca = alloca { i32, ptr }, align 4
|
|
%deferPtr = alloca ptr, align 4
|
|
store ptr null, ptr %deferPtr, align 4
|
|
%deferframe.buf = alloca %runtime.deferFrame, align 4
|
|
%0 = call ptr @llvm.stacksave()
|
|
call void @runtime.setupDeferFrame(ptr nonnull %deferframe.buf, ptr %0, ptr undef) #4
|
|
store i32 0, ptr %defer.alloca, align 4
|
|
%defer.alloca.repack22 = getelementptr inbounds { i32, ptr }, ptr %defer.alloca, i32 0, i32 1
|
|
store ptr null, ptr %defer.alloca.repack22, align 4
|
|
store ptr %defer.alloca, ptr %deferPtr, align 4
|
|
store i32 1, ptr %defer.alloca2, align 4
|
|
%defer.alloca2.repack23 = getelementptr inbounds { i32, ptr }, ptr %defer.alloca2, i32 0, i32 1
|
|
store ptr %defer.alloca, ptr %defer.alloca2.repack23, align 4
|
|
store ptr %defer.alloca2, ptr %deferPtr, align 4
|
|
%setjmp = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result = icmp eq i32 %setjmp, 0
|
|
br i1 %setjmp.result, label %1, label %lpad
|
|
|
|
1: ; preds = %entry
|
|
call void @main.external(ptr undef) #4
|
|
br label %rundefers.loophead
|
|
|
|
rundefers.loophead: ; preds = %4, %3, %1
|
|
%2 = load ptr, ptr %deferPtr, align 4
|
|
%stackIsNil = icmp eq ptr %2, null
|
|
br i1 %stackIsNil, label %rundefers.end, label %rundefers.loop
|
|
|
|
rundefers.loop: ; preds = %rundefers.loophead
|
|
%stack.next.gep = getelementptr inbounds %runtime._defer, ptr %2, i32 0, i32 1
|
|
%stack.next = load ptr, ptr %stack.next.gep, align 4
|
|
store ptr %stack.next, ptr %deferPtr, align 4
|
|
%callback = load i32, ptr %2, align 4
|
|
switch i32 %callback, label %rundefers.default [
|
|
i32 0, label %rundefers.callback0
|
|
i32 1, label %rundefers.callback1
|
|
]
|
|
|
|
rundefers.callback0: ; preds = %rundefers.loop
|
|
%setjmp3 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result4 = icmp eq i32 %setjmp3, 0
|
|
br i1 %setjmp.result4, label %3, label %lpad
|
|
|
|
3: ; preds = %rundefers.callback0
|
|
call void @"main.deferMultiple$1"(ptr undef)
|
|
br label %rundefers.loophead
|
|
|
|
rundefers.callback1: ; preds = %rundefers.loop
|
|
%setjmp5 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result6 = icmp eq i32 %setjmp5, 0
|
|
br i1 %setjmp.result6, label %4, label %lpad
|
|
|
|
4: ; preds = %rundefers.callback1
|
|
call void @"main.deferMultiple$2"(ptr undef)
|
|
br label %rundefers.loophead
|
|
|
|
rundefers.default: ; preds = %rundefers.loop
|
|
unreachable
|
|
|
|
rundefers.end: ; preds = %rundefers.loophead
|
|
call void @runtime.destroyDeferFrame(ptr nonnull %deferframe.buf, ptr undef) #4
|
|
ret void
|
|
|
|
recover: ; preds = %rundefers.end7
|
|
call void @runtime.destroyDeferFrame(ptr nonnull %deferframe.buf, ptr undef) #4
|
|
ret void
|
|
|
|
lpad: ; preds = %rundefers.callback119, %rundefers.callback016, %rundefers.callback1, %rundefers.callback0, %entry
|
|
br label %rundefers.loophead10
|
|
|
|
rundefers.loophead10: ; preds = %7, %6, %lpad
|
|
%5 = load ptr, ptr %deferPtr, align 4
|
|
%stackIsNil11 = icmp eq ptr %5, null
|
|
br i1 %stackIsNil11, label %rundefers.end7, label %rundefers.loop9
|
|
|
|
rundefers.loop9: ; preds = %rundefers.loophead10
|
|
%stack.next.gep12 = getelementptr inbounds %runtime._defer, ptr %5, i32 0, i32 1
|
|
%stack.next13 = load ptr, ptr %stack.next.gep12, align 4
|
|
store ptr %stack.next13, ptr %deferPtr, align 4
|
|
%callback15 = load i32, ptr %5, align 4
|
|
switch i32 %callback15, label %rundefers.default8 [
|
|
i32 0, label %rundefers.callback016
|
|
i32 1, label %rundefers.callback119
|
|
]
|
|
|
|
rundefers.callback016: ; preds = %rundefers.loop9
|
|
%setjmp17 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result18 = icmp eq i32 %setjmp17, 0
|
|
br i1 %setjmp.result18, label %6, label %lpad
|
|
|
|
6: ; preds = %rundefers.callback016
|
|
call void @"main.deferMultiple$1"(ptr undef)
|
|
br label %rundefers.loophead10
|
|
|
|
rundefers.callback119: ; preds = %rundefers.loop9
|
|
%setjmp20 = call i32 asm "\0Amovs r0, #0\0Amov r2, pc\0Astr r2, [r1, #4]", "={r0},{r1},~{r1},~{r2},~{r3},~{r4},~{r5},~{r6},~{r7},~{r8},~{r9},~{r10},~{r11},~{r12},~{lr},~{q0},~{q1},~{q2},~{q3},~{q4},~{q5},~{q6},~{q7},~{q8},~{q9},~{q10},~{q11},~{q12},~{q13},~{q14},~{q15},~{cpsr},~{memory}"(ptr nonnull %deferframe.buf) #5
|
|
%setjmp.result21 = icmp eq i32 %setjmp20, 0
|
|
br i1 %setjmp.result21, label %7, label %lpad
|
|
|
|
7: ; preds = %rundefers.callback119
|
|
call void @"main.deferMultiple$2"(ptr undef)
|
|
br label %rundefers.loophead10
|
|
|
|
rundefers.default8: ; preds = %rundefers.loop9
|
|
unreachable
|
|
|
|
rundefers.end7: ; preds = %rundefers.loophead10
|
|
br label %recover
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define internal void @"main.deferMultiple$1"(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
call void @runtime.printint32(i32 3, ptr undef) #4
|
|
ret void
|
|
}
|
|
|
|
; Function Attrs: nounwind
|
|
define internal void @"main.deferMultiple$2"(ptr %context) unnamed_addr #1 {
|
|
entry:
|
|
call void @runtime.printint32(i32 5, ptr undef) #4
|
|
ret void
|
|
}
|
|
|
|
attributes #0 = { allockind("alloc,zeroed") allocsize(0) "alloc-family"="runtime.alloc" "target-features"="+armv7-m,+hwdiv,+soft-float,+strict-align,+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,+strict-align,+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,+strict-align,+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 #4 = { nounwind }
|
|
attributes #5 = { nounwind returns_twice }
|