test/CodeGen/Hexagon/fusedandshift.ll


1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16

; RUN: llc -march=hexagon -mcpu=hexagonv4  < %s | FileCheck %s
; Check that we generate fused logical and with shift instruction.

; CHECK: r{{[0-9]+}} = and(#15, lsr(r{{[0-9]+}}, #{{[0-9]+}})

define i32 @main(i16* %a, i16* %b) nounwind {
  entry:
  %0 = load i16* %a, align 2
  %conv1 = sext i16 %0 to i32
  %shr1 = ashr i32 %conv1, 3
  %and1 = and i32 %shr1, 15
  %conv2 = trunc i32 %and1 to i16
  store i16 %conv2, i16* %b, align 2
  ret i32 0
}