15 lines
370 B
LLVM
15 lines
370 B
LLVM
; RUN: llc < %s -march=arm -mattr=+v7 | FileCheck %s
|
|
|
|
define i32 @f(i32 %a) nounwind readnone optsize ssp {
|
|
entry:
|
|
%conv = zext i32 %a to i64
|
|
%tmp1 = tail call i64 @llvm.ctlz.i64(i64 %conv, i1 true)
|
|
; CHECK: clz
|
|
; CHECK-NOT: adds
|
|
%cast = trunc i64 %tmp1 to i32
|
|
%sub = sub nsw i32 63, %cast
|
|
ret i32 %sub
|
|
}
|
|
|
|
declare i64 @llvm.ctlz.i64(i64, i1) nounwind readnone
|