1; Intel chips with slow unaligned memory accesses 2 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 14 15; Intel chips with fast unaligned memory accesses 16 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 2>&1 | FileCheck %s --check-prefix=FAST 26 27; AMD chips with slow unaligned memory accesses 28 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 38 39; AMD chips with fast unaligned memory accesses 40 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 50; Other chips with slow unaligned memory accesses 51 52; RUN: llc < %s -mtriple=i386-unknown-unknown -mcpu=c3-2 2>&1 | FileCheck %s --check-prefix=SLOW 53 54; Verify that the slow/fast unaligned memory attribute is set correctly for each CPU model. 55; Slow chips use 4-byte stores. Fast chips with SSE or later use something other than 4-byte stores. 56; Chips that don't have SSE use 4-byte stores either way, so they're not tested. 57 58; Also verify that SSE4.2 or SSE4a imply fast unaligned accesses. 59 60; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=sse4.2 2>&1 | FileCheck %s --check-prefix=FAST 61; RUN: llc < %s -mtriple=i386-unknown-unknown -mattr=sse4a 2>&1 | FileCheck %s --check-prefix=FAST 62 63define void @store_zeros(i8* %a) { 64; SLOW-NOT: not a recognized processor 65; SLOW-LABEL: store_zeros: 66; SLOW: # BB#0: 67; SLOW-NEXT: movl 68; SLOW-NEXT: movl 69; SLOW-NEXT: movl 70; SLOW-NEXT: movl 71; SLOW-NEXT: movl 72; SLOW-NEXT: movl 73; SLOW-NEXT: movl 74; SLOW-NEXT: movl 75; SLOW-NEXT: movl 76; SLOW-NEXT: movl 77; SLOW-NEXT: movl 78; SLOW-NEXT: movl 79; SLOW-NEXT: movl 80; SLOW-NEXT: movl 81; SLOW-NEXT: movl 82; SLOW-NEXT: movl 83; SLOW-NEXT: movl 84; 85; FAST-NOT: not a recognized processor 86; FAST-LABEL: store_zeros: 87; FAST: # BB#0: 88; FAST-NEXT: movl {{[0-9]+}}(%esp), %eax 89; FAST-NOT: movl 90 call void @llvm.memset.p0i8.i64(i8* %a, i8 0, i64 64, i32 1, i1 false) 91 ret void 92} 93 94declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) 95 96