llvm-6502/test/Transforms/TailCallElim/accum_recursion.ll

16 lines
427 B
LLVM
Raw Normal View History

; RUN: llvm-as < %s | opt -tailcallelim | llvm-dis | not grep call
define i32 @factorial(i32 %x) {
entry:
%tmp.1 = icmp sgt i32 %x, 0 ; <i1> [#uses=1]
br i1 %tmp.1, label %then, label %else
then: ; preds = %entry
%tmp.6 = add i32 %x, -1 ; <i32> [#uses=1]
%tmp.4 = call i32 @factorial( i32 %tmp.6 ) ; <i32> [#uses=1]
%tmp.7 = mul i32 %tmp.4, %x ; <i32> [#uses=1]
ret i32 %tmp.7
else: ; preds = %entry
ret i32 1
}