The i64ToString function is soon done.
Co-authored-by: William <Rakarake@users.noreply.github.com>
This commit is contained in:
Samuel Hammersberg
parent
b389e397b6
commit
2c17695d3a
3 changed files with 168 additions and 20 deletions
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@ -2,4 +2,4 @@
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main = 2
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main = -12321
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@ -1,7 +1,11 @@
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; External declaration of the puts function
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declare i32 @puts(i8* nocapture) nounwind
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declare i64 @llvm.abs.i64(i64, i1 immarg)
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define [22 x i8] @i64ToString(i64 %val) {
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define [21 x i8] @i64ToString(i64 %val_org) {
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%val = alloca i64
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store i64 %val_org, i64* %val
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%val_copy = add i64 0, %val_org
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; https://stackoverflow.com/a/7123710
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; an algorithm for translating ints to strings
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; s = ''
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@ -18,43 +22,67 @@ define [22 x i8] @i64ToString(i64 %val) {
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; return sign + s
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; allocate memory for the string, and store the temp variable into it
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%string_ptr = alloca [22 x i8]
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store [22 x i8] c"Tjena banane hellosa\0A\00", ptr %string_ptr
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%string_ptr = alloca [21 x i8]
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store [21 x i8] c"\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00\00", ptr %string_ptr
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; create a pointer to the array
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%array_index_ptr = alloca i32
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store i32 0, ptr %array_index_ptr
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store i32 0, i32* %array_index_ptr
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; get the value of the first element in the array
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br label %while_point
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while_point:
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%val.tmp = load i64, i64* %val; load i64, i64* %val
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%val.1 = call i64 @llvm.abs.i64(i64 %val.tmp, i1 true)
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%tmp = load i32, ptr %array_index_ptr
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%array_pointer.1 = getelementptr [21 x i8], [21 x i8]* %string_ptr, i32 0, i32 %tmp
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%array_index_ptr.1 = add i32 %tmp, 1
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store i32 %array_index_ptr.1, ptr %array_index_ptr
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; this should not work, but it does
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%remainder = srem i64 %val.1, 10
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%remainder_tmp = alloca i64
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store i64 %remainder, i64* %remainder_tmp
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%remainder_tmp8 = bitcast i64* %remainder_tmp to i8*
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%remainder8 = load i8, i8* %remainder_tmp8
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%i = sdiv i64 %val.1, 10
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%char = add i8 48, %remainder8
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store i8 %char, i8* %array_pointer.1 ; update string!
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store i64 %i, i64* %val
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%while_condition = icmp eq i64 %i, 0
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br i1 %while_condition, label %while_break, label %while_point
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while_break:
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; get last_pointer
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%array_index_ptr.0 = load i32, i32* %array_index_ptr
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%p = getelementptr [22 x i8], [22 x i8]* %string_ptr, i32 0, i32 %array_index_ptr.0
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%array_pointer.0 = getelementptr [21 x i8], [21 x i8]* %string_ptr, i32 0, i32 %array_index_ptr.0
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; check if p is below 0
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%condition = icmp slt i64 %val, 0
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%condition = icmp slt i64 %val_copy, 0
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br i1 %condition, label %negative_check_true, label %negative_check_false
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negative_check_true:
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store i8 45, i8* %p
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store i8 45, i8* %array_pointer.0
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br label %negative_check_done
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negative_check_false:
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store i8 43, i8* %p
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; store i8 43, i8* %array_pointer.0
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br label %negative_check_done
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negative_check_done:
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; iterate over the next nums
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%noop = add i32 0, 0
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; load the result and return it
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%res = load [22 x i8],[22 x i8]* %string_ptr
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ret [22 x i8] %res
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%res = load [21 x i8],[21 x i8]* %string_ptr
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ret [21 x i8] %res
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}
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; Definition of main function
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define i32 @main() { ; i32()*
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%val = add i64 1, 0
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; %val = add i64 -123456789, 0
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%val = add i64 -1234, 0
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%print_res = call [22 x i8] @i64ToString(i64 %val)
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%ptr = alloca [22 x i8]
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store [22 x i8] %print_res, ptr %ptr
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%print_res = call [21 x i8] @i64ToString(i64 %val)
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%ptr = alloca [21 x i8]
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store [21 x i8] %print_res, ptr %ptr
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call i32 @puts(i8* %ptr)
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120
test/simple_goal.s
Normal file
120
test/simple_goal.s
Normal file
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@ -0,0 +1,120 @@
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.text
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.file "simple_goal.ll"
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.globl i64ToString # -- Begin function i64ToString
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.p2align 4, 0x90
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.type i64ToString,@function
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i64ToString: # @i64ToString
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.cfi_startproc
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# %bb.0:
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pushq %rbp
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.cfi_def_cfa_offset 16
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pushq %r15
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.cfi_def_cfa_offset 24
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pushq %r14
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.cfi_def_cfa_offset 32
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pushq %r13
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.cfi_def_cfa_offset 40
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pushq %r12
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.cfi_def_cfa_offset 48
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pushq %rbx
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.cfi_def_cfa_offset 56
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subq $40, %rsp
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.cfi_def_cfa_offset 96
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.cfi_offset %rbx, -56
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.cfi_offset %r12, -48
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.cfi_offset %r13, -40
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.cfi_offset %r14, -32
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.cfi_offset %r15, -24
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.cfi_offset %rbp, -16
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movq %rsi, %r12
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movq %rdi, %r14
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movabsq $7810763617093968238, %rax # imm = 0x6C656820656E616E
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movq %rax, 22(%rsp)
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movabsq $7017206772232710740, %rax # imm = 0x616220616E656A54
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movq %rax, 14(%rsp)
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movw $10, 34(%rsp)
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movl $1634955116, 30(%rsp) # imm = 0x61736F6C
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movl $0, 36(%rsp)
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leaq 14(%rsp), %rax
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testq %rsi, %rsi
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js .LBB0_1
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# %bb.2: # %negative_check_false
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movb $43, (%rax)
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jmp .LBB0_3
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.LBB0_1: # %negative_check_true
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movb $45, (%rax)
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.LBB0_3: # %negative_check_done
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movabsq $7378697629483820647, %r13 # imm = 0x6666666666666667
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leaq 14(%rsp), %r15
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.p2align 4, 0x90
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.LBB0_4: # %while_point
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# =>This Inner Loop Header: Depth=1
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movq %r12, %rax
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imulq %r13
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movq %rdx, %rbx
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movq %rdx, %rbp
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shrq $63, %rbp
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sarq $2, %rbx
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movq %r15, %rdi
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callq puts@PLT
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addq %rbp, %rbx
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jne .LBB0_4
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# %bb.5: # %while_break
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movq 14(%rsp), %rax
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movq 22(%rsp), %rcx
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movl 30(%rsp), %edx
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movzwl 34(%rsp), %esi
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movw %si, 20(%r14)
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movl %edx, 16(%r14)
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movq %rcx, 8(%r14)
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movq %rax, (%r14)
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movq %r14, %rax
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addq $40, %rsp
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.cfi_def_cfa_offset 56
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popq %rbx
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.cfi_def_cfa_offset 48
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popq %r12
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.cfi_def_cfa_offset 40
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popq %r13
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.cfi_def_cfa_offset 32
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popq %r14
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.cfi_def_cfa_offset 24
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popq %r15
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.cfi_def_cfa_offset 16
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popq %rbp
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.cfi_def_cfa_offset 8
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retq
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.Lfunc_end0:
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.size i64ToString, .Lfunc_end0-i64ToString
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.cfi_endproc
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# -- End function
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.globl main # -- Begin function main
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.p2align 4, 0x90
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.type main,@function
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main: # @main
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.cfi_startproc
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# %bb.0:
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subq $56, %rsp
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.cfi_def_cfa_offset 64
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leaq 12(%rsp), %rdi
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movl $200, %esi
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callq i64ToString@PLT
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movzwl 32(%rsp), %eax
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movl 28(%rsp), %ecx
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movq 12(%rsp), %rdx
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movq 20(%rsp), %rsi
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movq %rdx, 34(%rsp)
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movq %rsi, 42(%rsp)
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movl %ecx, 50(%rsp)
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movw %ax, 54(%rsp)
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leaq 34(%rsp), %rdi
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callq puts@PLT
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xorl %eax, %eax
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addq $56, %rsp
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.cfi_def_cfa_offset 8
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retq
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.Lfunc_end1:
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.size main, .Lfunc_end1-main
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.cfi_endproc
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# -- End function
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.section ".note.GNU-stack","",@progbits
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