1 ; Intel chips with slow unaligned memory accesses
3 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=pentium3 2>&1 | FileCheck %s --check-prefix=SLOW
4 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=pentium3m 2>&1 | FileCheck %s --check-prefix=SLOW
5 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=pentium-m 2>&1 | FileCheck %s --check-prefix=SLOW
6 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=pentium4 2>&1 | FileCheck %s --check-prefix=SLOW
7 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=pentium4m 2>&1 | FileCheck %s --check-prefix=SLOW
8 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=yonah 2>&1 | FileCheck %s --check-prefix=SLOW
9 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=prescott 2>&1 | FileCheck %s --check-prefix=SLOW
10 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=nocona 2>&1 | FileCheck %s --check-prefix=SLOW
11 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=core2 2>&1 | FileCheck %s --check-prefix=SLOW
12 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=penryn 2>&1 | FileCheck %s --check-prefix=SLOW
13 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=bonnell 2>&1 | FileCheck %s --check-prefix=SLOW
15 ; Intel chips with fast unaligned memory accesses
17 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=silvermont 2>&1 | FileCheck %s --check-prefix=FAST
18 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=nehalem 2>&1 | FileCheck %s --check-prefix=FAST
19 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=westmere 2>&1 | FileCheck %s --check-prefix=FAST
20 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=sandybridge 2>&1 | FileCheck %s --check-prefix=FAST
21 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=ivybridge 2>&1 | FileCheck %s --check-prefix=FAST
22 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=haswell 2>&1 | FileCheck %s --check-prefix=FAST
23 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=broadwell 2>&1 | FileCheck %s --check-prefix=FAST
24 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=knl 2>&1 | FileCheck %s --check-prefix=FAST
25 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=skylake-avx512 2>&1 | FileCheck %s --check-prefix=FAST
27 ; AMD chips with slow unaligned memory accesses
29 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=athlon-4 2>&1 | FileCheck %s --check-prefix=SLOW
30 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=athlon-xp 2>&1 | FileCheck %s --check-prefix=SLOW
31 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=k8 2>&1 | FileCheck %s --check-prefix=SLOW
32 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=opteron 2>&1 | FileCheck %s --check-prefix=SLOW
33 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=athlon64 2>&1 | FileCheck %s --check-prefix=SLOW
34 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=athlon-fx 2>&1 | FileCheck %s --check-prefix=SLOW
35 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=k8-sse3 2>&1 | FileCheck %s --check-prefix=SLOW
36 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=opteron-sse3 2>&1 | FileCheck %s --check-prefix=SLOW
37 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=athlon64-sse3 2>&1 | FileCheck %s --check-prefix=SLOW
39 ; AMD chips with fast unaligned memory accesses
41 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=amdfam10 2>&1 | FileCheck %s --check-prefix=FAST
42 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=barcelona 2>&1 | FileCheck %s --check-prefix=FAST
43 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=btver1 2>&1 | FileCheck %s --check-prefix=FAST
44 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=btver2 2>&1 | FileCheck %s --check-prefix=FAST
45 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=bdver1 2>&1 | FileCheck %s --check-prefix=FAST
46 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=bdver2 2>&1 | FileCheck %s --check-prefix=FAST
47 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=bdver3 2>&1 | FileCheck %s --check-prefix=FAST
48 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=bdver4 2>&1 | FileCheck %s --check-prefix=FAST
49 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=znver1 2>&1 | FileCheck %s --check-prefix=FAST
50 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=znver2 2>&1 | FileCheck %s --check-prefix=FAST
52 ; Other chips with slow unaligned memory accesses
54 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=c3-2 2>&1 | FileCheck %s --check-prefix=SLOW
56 ; Verify that the slow/fast unaligned memory attribute is set correctly for each CPU model.
57 ; Slow chips use 4-byte stores. Fast chips with SSE or later use something other than 4-byte stores.
58 ; Chips that don't have SSE use 4-byte stores either way, so they're not tested.
60 ; Also verify that SSE4.2 or SSE4a imply fast unaligned accesses.
62 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=sse4.2 2>&1 | FileCheck %s --check-prefix=FAST
63 ; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=sse4a 2>&1 | FileCheck %s --check-prefix=FAST
65 define void @store_zeros(i8* %a) {
66 ; SLOW-NOT: not a recognized processor
67 ; SLOW-LABEL: store_zeros:
87 ; FAST-NOT: not a recognized processor
88 ; FAST-LABEL: store_zeros:
90 ; FAST-NEXT: movl {{[0-9]+}}(%esp), %eax
92 call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 64, i1 false)
96 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)