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AVX-512, X86: Added lowering for shift operations for SKX.

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The other changes in the LowerShift() are not functional,
just to make the code more convenient.
So, the functional changes for SKX only.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237129 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Elena Demikhovsky
2015-05-12 13:25:46 +00:00
parent e38f45effc
commit 9cc691fa05
2 changed files with 94 additions and 101 deletions
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29
test/CodeGen/X86/avx512-shift.ll
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@@ -1,4 +1,5 @@
;RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=knl | FileCheck %s
;RUN: llc < %s -mtriple=x86_64-apple-darwin -mcpu=skx | FileCheck --check-prefix=SKX %s
;CHECK-LABEL: shift_16_i32
;CHECK: vpsrld
@@ -24,6 +25,18 @@ define <8 x i64> @shift_8_i64(<8 x i64> %a) {
ret <8 x i64> %d;
}
;SKX-LABEL: shift_4_i64
;SKX: vpsrlq
;SKX: vpsllq
;SKX: vpsraq
;SKX: ret
define <4 x i64> @shift_4_i64(<4 x i64> %a) {
%b = lshr <4 x i64> %a, <i64 1, i64 1, i64 1, i64 1>
%c = shl <4 x i64> %b, <i64 12, i64 12, i64 12, i64 12>
%d = ashr <4 x i64> %c, <i64 12, i64 12, i64 12, i64 12>
ret <4 x i64> %d;
}
; CHECK-LABEL: variable_shl4
; CHECK: vpsllvq %zmm
; CHECK: ret
@@ -72,6 +85,22 @@ define <8 x i64> @variable_sra2(<8 x i64> %x, <8 x i64> %y) {
ret <8 x i64> %k
}
; SKX-LABEL: variable_sra3
; SKX: vpsravq %ymm
; SKX: ret
define <4 x i64> @variable_sra3(<4 x i64> %x, <4 x i64> %y) {
%k = ashr <4 x i64> %x, %y
ret <4 x i64> %k
}
; SKX-LABEL: variable_sra4
; SKX: vpsravw %xmm
; SKX: ret
define <8 x i16> @variable_sra4(<8 x i16> %x, <8 x i16> %y) {
%k = ashr <8 x i16> %x, %y
ret <8 x i16> %k
}
; CHECK-LABEL: variable_sra01_load
; CHECK: vpsravd (%
; CHECK: ret