Data commit

Task/Logical-operations/LLVM/logical-operations.llvm

@@ -0,0 +1,101 @@
+; This is not strictly LLVM, as it uses the C library function "printf".
+; LLVM does not provide a way to print values, so the alternative would be
+; to just load the string into memory, and that would be boring.
+
+; Additional comments have been inserted, as well as changes made from the output produced by clang such as putting more meaningful labels for the jumps
+
+;--- The declarations for the external C functions
+declare i32 @printf(i8*, ...)
+
+$"FORMAT_AND" = comdat any
+
+$"FORMAT_OR" = comdat any
+
+$"FORMAT_NOT" = comdat any
+
+@"FORMAT_AND" = linkonce_odr unnamed_addr constant [15 x i8] c"a and b is %d\0A\00", comdat, align 1
+@"FORMAT_OR" = linkonce_odr unnamed_addr constant [14 x i8] c"a or b is %d\0A\00", comdat, align 1
+@"FORMAT_NOT" = linkonce_odr unnamed_addr constant [13 x i8] c"not a is %d\0A\00", comdat, align 1
+
+; Function Attrs: noinline nounwind optnone uwtable
+define void @print_logic(i32, i32) #0 {
+  %3 = alloca i32, align 4          ;-- allocate b
+  %4 = alloca i32, align 4          ;-- allocate a
+  store i32 %1, i32* %3, align 4    ;-- copy parameter b
+  store i32 %0, i32* %4, align 4    ;-- copy parameter a
+  %5 = load i32, i32* %4, align 4   ;-- load a
+  %6 = icmp ne i32 %5, 0            ;-- is a true?
+  br i1 %6, label %and_true, label %and_false
+
+and_true:
+  %7 = load i32, i32* %3, align 4
+  %8 = icmp ne i32 %7, 0
+  br label %and_false
+
+and_false:
+  %9 = phi i1 [ false, %2 ], [ %8, %and_true ]
+  %10 = zext i1 %9 to i32
+  %11 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([15 x i8], [15 x i8]* @"FORMAT_AND", i32 0, i32 0), i32 %10)
+  %12 = load i32, i32* %4, align 4  ;-- load a
+  %13 = icmp ne i32 %12, 0          ;-- is a true?
+  br i1 %13, label %or_true, label %or_false
+
+or_false:
+  %14 = load i32, i32* %3, align 4  ;-- load b
+  %15 = icmp ne i32 %14, 0          ;-- is b true?
+  br label %or_true
+
+or_true:
+  %16 = phi i1 [ true, %and_false ], [ %15, %or_false ]
+  %17 = zext i1 %16 to i32
+  %18 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([14 x i8], [14 x i8]* @"FORMAT_OR", i32 0, i32 0), i32 %17)
+
+  %19 = load i32, i32* %4, align 4  ;-- load a
+  %20 = icmp ne i32 %19, 0
+  %21 = xor i1 %20, true
+  %22 = zext i1 %21 to i32
+  %23 = call i32 (i8*, ...) @printf(i8* getelementptr inbounds ([13 x i8], [13 x i8]* @"FORMAT_NOT", i32 0, i32 0), i32 %22)
+  ret void
+}
+
+; Function Attrs: noinline nounwind optnone uwtable
+define i32 @main() #0 {
+  %1 = alloca i32, align 4          ;-- allocate i
+  %2 = alloca i32, align 4          ;-- allocate j
+  store i32 0, i32* %1, align 4     ;-- store 0 in i
+  br label %loop_i
+
+loop_i:
+  %3 = load i32, i32* %1, align 4   ;-- load i
+  %4 = icmp slt i32 %3, 2           ;-- i < 2
+  br i1 %4, label %loop_j_init, label %exit
+
+loop_j_init:
+  store i32 0, i32* %2, align 4     ;-- store 0 in j
+  br label %loop_j
+
+loop_j:
+  %5 = load i32, i32* %2, align 4   ;-- load j
+  %6 = icmp slt i32 %5, 2           ;-- j < 2
+  br i1 %6, label %loop_body, label %loop_i_inc
+
+loop_body:
+  %7 = load i32, i32* %2, align 4   ;-- load j
+  %8 = load i32, i32* %1, align 4   ;-- load i
+  call void @print_logic(i32 %8, i32 %7)
+  %9 = load i32, i32* %2, align 4   ;-- load j
+  %10 = add nsw i32 %9, 1           ;-- increment j
+  store i32 %10, i32* %2, align 4   ;-- store j
+  br label %loop_j
+
+loop_i_inc:
+  %11 = load i32, i32* %1, align 4  ;-- load i
+  %12 = add nsw i32 %11, 1          ;-- increment i
+  store i32 %12, i32* %1, align 4   ;-- store i
+  br label %loop_i
+
+exit:
+  ret i32 0
+}
+
+attributes #0 = { noinline nounwind optnone uwtable "correctly-rounded-divide-sqrt-fp-math"="false" "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-jump-tables"="false" "no-nans-fp-math"="false" "no-signed-zeros-fp-math"="false" "no-trapping-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2,+x87" "unsafe-fp-math"="false" "use-soft-float"="false" }