File: fold-vex.ll

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (31 lines) | stat: -rw-r--r-- 1,383 bytes parent folder | download | duplicates (10)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
; Use CPU parameters to ensure that a CPU-specific attribute is not overriding the AVX definition.

; RUN: llc < %s -mtriple=x86_64-unknown-unknown                  -mattr=+avx | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=corei7-avx             | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=btver2                 | FileCheck %s
; RUN: llc < %s -mtriple=x86_64-unknown-unknown                  -mattr=-avx | FileCheck %s --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=corei7-avx -mattr=-avx | FileCheck %s --check-prefix=SSE
; RUN: llc < %s -mtriple=x86_64-unknown-unknown -mcpu=btver2     -mattr=-avx | FileCheck %s --check-prefix=SSE

; No need to load unaligned operand from memory using an explicit instruction with AVX.
; The operand should be folded into the AND instr.

; With SSE, folding memory operands into math/logic ops requires 16-byte alignment
; unless specially configured on some CPUs such as AMD Family 10H.

define <4 x i32> @test1(<4 x i32>* %p0, <4 x i32> %in1) nounwind {
  %in0 = load <4 x i32>, <4 x i32>* %p0, align 2
  %a = and <4 x i32> %in0, %in1
  ret <4 x i32> %a

; CHECK-LABEL: @test1
; CHECK-NOT:   vmovups
; CHECK:       vandps (%rdi), %xmm0, %xmm0
; CHECK-NEXT:  ret

; SSE-LABEL: @test1
; SSE:       movups (%rdi), %xmm1
; SSE-NEXT:  andps %xmm1, %xmm0
; SSE-NEXT:  ret
}