mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-25 04:02:41 +01:00
50 lines
1.6 KiB
LLVM
50 lines
1.6 KiB
LLVM
; RUN: llvm-as < %s | llvm-dis > %t1.ll
|
|
; RUN: llvm-as %t1.ll -o - | llvm-dis > %t2.ll
|
|
; RUN: diff %t1.ll %t2.ll
|
|
|
|
declare i32 @atoi(i8*)
|
|
|
|
define i64 @fib(i64 %n) {
|
|
icmp ult i64 %n, 2 ; <i1>:1 [#uses=1]
|
|
br i1 %1, label %BaseCase, label %RecurseCase
|
|
|
|
BaseCase: ; preds = %0
|
|
ret i64 1
|
|
|
|
RecurseCase: ; preds = %0
|
|
%n2 = sub i64 %n, 2 ; <i64> [#uses=1]
|
|
%n1 = sub i64 %n, 1 ; <i64> [#uses=1]
|
|
%f2 = call i64 @fib( i64 %n2 ) ; <i64> [#uses=1]
|
|
%f1 = call i64 @fib( i64 %n1 ) ; <i64> [#uses=1]
|
|
%result = add i64 %f2, %f1 ; <i64> [#uses=1]
|
|
ret i64 %result
|
|
}
|
|
|
|
define i64 @realmain(i32 %argc, i8** %argv) {
|
|
; <label>:0
|
|
icmp eq i32 %argc, 2 ; <i1>:1 [#uses=1]
|
|
br i1 %1, label %HasArg, label %Continue
|
|
|
|
HasArg: ; preds = %0
|
|
%n1 = add i32 1, 1 ; <i32> [#uses=1]
|
|
br label %Continue
|
|
|
|
Continue: ; preds = %HasArg, %0
|
|
%n = phi i32 [ %n1, %HasArg ], [ 1, %0 ] ; <i32> [#uses=1]
|
|
%N = sext i32 %n to i64 ; <i64> [#uses=1]
|
|
%F = call i64 @fib( i64 %N ) ; <i64> [#uses=1]
|
|
ret i64 %F
|
|
}
|
|
|
|
define i64 @trampoline(i64 %n, i64 (i64)* %fibfunc) {
|
|
%F = call i64 %fibfunc( i64 %n ) ; <i64> [#uses=1]
|
|
ret i64 %F
|
|
}
|
|
|
|
define i32 @main() {
|
|
%Result = call i64 @trampoline( i64 10, i64 (i64)* @fib ) ; <i64> [#uses=1]
|
|
%Result.upgrd.1 = trunc i64 %Result to i32 ; <i32> [#uses=1]
|
|
ret i32 %Result.upgrd.1
|
|
}
|
|
|