minix/external/bsd/llvm/dist/llvm/test/CodeGen/ARM/fold-const.ll
Lionel Sambuc 0a6a1f1d05 NetBSD re-synchronization of the source tree
This brings our tree to NetBSD 7.0, as found on -current on the
10-10-2015.

This updates:
 - LLVM to 3.6.1
 - GCC to GCC 5.1
 - Replace minix/commands/zdump with usr.bin/zdump
 - external/bsd/libelf has moved to /external/bsd/elftoolchain/
 - Import ctwm
 - Drop sprintf from libminc

Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
2016-01-13 20:32:14 +01:00

15 lines
380 B
LLVM

; RUN: llc -mtriple=arm-eabi -mattr=+v7 %s -o - | 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