Home | History | Annotate | Download | only in X86
      1 ; RUN: llc < %s -march=x86 -mattr=+sse2 | FileCheck %s
      2 
      3 ; test vector shifts converted to proper SSE2 vector shifts when the shift
      4 ; amounts are the same.
      5 
      6 ; Note that x86 does have ashr 
      7 
      8 ; shift1a can't use a packed shift
      9 define void @shift1a(<2 x i64> %val, <2 x i64>* %dst) nounwind {
     10 entry:
     11 ; CHECK-LABEL: shift1a:
     12 ; CHECK: sarl
     13   %ashr = ashr <2 x i64> %val, < i64 32, i64 32 >
     14   store <2 x i64> %ashr, <2 x i64>* %dst
     15   ret void
     16 }
     17 
     18 define void @shift2a(<4 x i32> %val, <4 x i32>* %dst) nounwind {
     19 entry:
     20 ; CHECK-LABEL: shift2a:
     21 ; CHECK: psrad	$5
     22   %ashr = ashr <4 x i32> %val, < i32 5, i32 5, i32 5, i32 5 >
     23   store <4 x i32> %ashr, <4 x i32>* %dst
     24   ret void
     25 }
     26 
     27 define void @shift2b(<4 x i32> %val, <4 x i32>* %dst, i32 %amt) nounwind {
     28 entry:
     29 ; CHECK-LABEL: shift2b:
     30 ; CHECK: movd
     31 ; CHECK: psrad
     32   %0 = insertelement <4 x i32> undef, i32 %amt, i32 0
     33   %1 = insertelement <4 x i32> %0, i32 %amt, i32 1
     34   %2 = insertelement <4 x i32> %1, i32 %amt, i32 2
     35   %3 = insertelement <4 x i32> %2, i32 %amt, i32 3
     36   %ashr = ashr <4 x i32> %val, %3
     37   store <4 x i32> %ashr, <4 x i32>* %dst
     38   ret void
     39 }
     40 
     41 define void @shift3a(<8 x i16> %val, <8 x i16>* %dst) nounwind {
     42 entry:
     43 ; CHECK-LABEL: shift3a:
     44 ; CHECK: psraw	$5
     45   %ashr = ashr <8 x i16> %val, < i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5, i16 5 >
     46   store <8 x i16> %ashr, <8 x i16>* %dst
     47   ret void
     48 }
     49 
     50 define void @shift3b(<8 x i16> %val, <8 x i16>* %dst, i16 %amt) nounwind {
     51 entry:
     52 ; CHECK-LABEL: shift3b:
     53 ; CHECK: movzwl
     54 ; CHECK: movd
     55 ; CHECK: psraw
     56   %0 = insertelement <8 x i16> undef, i16 %amt, i32 0
     57   %1 = insertelement <8 x i16> %0, i16 %amt, i32 1
     58   %2 = insertelement <8 x i16> %1, i16 %amt, i32 2
     59   %3 = insertelement <8 x i16> %2, i16 %amt, i32 3
     60   %4 = insertelement <8 x i16> %3, i16 %amt, i32 4
     61   %5 = insertelement <8 x i16> %4, i16 %amt, i32 5
     62   %6 = insertelement <8 x i16> %5, i16 %amt, i32 6
     63   %7 = insertelement <8 x i16> %6, i16 %amt, i32 7
     64   %ashr = ashr <8 x i16> %val, %7
     65   store <8 x i16> %ashr, <8 x i16>* %dst
     66   ret void
     67 }
     68