llvm/test/CodeGen/Thumb2/bfx.ll
Jim Grosbach 3a1287b470 Update ARM DAGtoDAG for matching UBFX instruction for unsigned bitfield
extraction. This fixes PR5998.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@102144 91177308-0d34-0410-b5e6-96231b3b80d8
2010-04-22 23:24:18 +00:00

29 lines
528 B
LLVM

; RUN: llc < %s -march=thumb -mattr=+thumb2 | FileCheck %s
define i32 @sbfx1(i32 %a) {
; CHECK: sbfx1
; CHECK: sbfx r0, r0, #7, #11
%t1 = lshr i32 %a, 7
%t2 = trunc i32 %t1 to i11
%t3 = sext i11 %t2 to i32
ret i32 %t3
}
define i32 @ubfx1(i32 %a) {
; CHECK: ubfx1
; CHECK: ubfx r0, r0, #7, #11
%t1 = lshr i32 %a, 7
%t2 = trunc i32 %t1 to i11
%t3 = zext i11 %t2 to i32
ret i32 %t3
}
define i32 @ubfx2(i32 %a) {
; CHECK: ubfx2
; CHECK: ubfx r0, r0, #7, #11
%t1 = lshr i32 %a, 7
%t2 = and i32 %t1, 2047
ret i32 %t2
}