1 ; RUN: llc -mtriple=i686-windows -mattr=+sse2 < %s | FileCheck %s 2 3 target datalayout = "e-m:w-p:32:32-i64:64-f80:32-n8:16:32-S32" 4 target triple = "i686-pc-windows-msvc" 5 6 ; There is a conflict between lowering the X86 memory intrinsics and the "base" 7 ; register used to address stack locals. See X86RegisterInfo::hasBaseRegister 8 ; for when this is necessary. Typically, we chose ESI for the base register, 9 ; which all of the X86 string instructions use. 10 11 ; The pattern of vector icmp and extractelement is used in these tests because 12 ; it forces creation of an aligned stack temporary. Perhaps such temporaries 13 ; shouldn't be aligned. 14 15 declare void @escape_vla_and_icmp(i8*, i1 zeroext) 16 declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture readonly, i32, i32, i1) 17 declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i32, i1) 18 19 define i32 @memcpy_novla_vector(<4 x i32>* %vp0, i8* %a, i8* %b, i32 %n, i1 zeroext %cond) { 20 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %b, i32 128, i32 4, i1 false) 21 br i1 %cond, label %spill_vectors, label %no_vectors 22 23 no_vectors: 24 ret i32 0 25 26 spill_vectors: 27 %vp1 = getelementptr <4 x i32>, <4 x i32>* %vp0, i32 1 28 %v0 = load <4 x i32>, <4 x i32>* %vp0 29 %v1 = load <4 x i32>, <4 x i32>* %vp1 30 %vicmp = icmp slt <4 x i32> %v0, %v1 31 %icmp = extractelement <4 x i1> %vicmp, i32 0 32 call void @escape_vla_and_icmp(i8* null, i1 zeroext %icmp) 33 %r = extractelement <4 x i32> %v0, i32 0 34 ret i32 %r 35 } 36 37 ; CHECK-LABEL: _memcpy_novla_vector: 38 ; CHECK: andl $-16, %esp 39 ; CHECK-DAG: movl $32, %ecx 40 ; CHECK-DAG: movl {{.*}}, %esi 41 ; CHECK-DAG: movl {{.*}}, %edi 42 ; CHECK: rep;movsl 43 44 define i32 @memcpy_vla_vector(<4 x i32>* %vp0, i8* %a, i8* %b, i32 %n, i1 zeroext %cond) { 45 call void @llvm.memcpy.p0i8.p0i8.i32(i8* %a, i8* %b, i32 128, i32 4, i1 false) 46 br i1 %cond, label %spill_vectors, label %no_vectors 47 48 no_vectors: 49 ret i32 0 50 51 spill_vectors: 52 %vp1 = getelementptr <4 x i32>, <4 x i32>* %vp0, i32 1 53 %v0 = load <4 x i32>, <4 x i32>* %vp0 54 %v1 = load <4 x i32>, <4 x i32>* %vp1 55 %vicmp = icmp slt <4 x i32> %v0, %v1 56 %icmp = extractelement <4 x i1> %vicmp, i32 0 57 %vla = alloca i8, i32 %n 58 call void @escape_vla_and_icmp(i8* %vla, i1 zeroext %icmp) 59 %r = extractelement <4 x i32> %v0, i32 0 60 ret i32 %r 61 } 62 63 ; CHECK-LABEL: _memcpy_vla_vector: 64 ; CHECK: andl $-16, %esp 65 ; CHECK: movl %esp, %esi 66 ; CHECK: pushl $128 67 ; CHECK: calll _memcpy 68 ; CHECK: calll __chkstk 69 70 ; stosd doesn't clobber esi, so we can use it. 71 72 define i32 @memset_vla_vector(<4 x i32>* %vp0, i8* %a, i32 %n, i1 zeroext %cond) { 73 call void @llvm.memset.p0i8.i32(i8* %a, i8 42, i32 128, i32 4, i1 false) 74 br i1 %cond, label %spill_vectors, label %no_vectors 75 76 no_vectors: 77 ret i32 0 78 79 spill_vectors: 80 %vp1 = getelementptr <4 x i32>, <4 x i32>* %vp0, i32 1 81 %v0 = load <4 x i32>, <4 x i32>* %vp0 82 %v1 = load <4 x i32>, <4 x i32>* %vp1 83 %vicmp = icmp slt <4 x i32> %v0, %v1 84 %icmp = extractelement <4 x i1> %vicmp, i32 0 85 %vla = alloca i8, i32 %n 86 call void @escape_vla_and_icmp(i8* %vla, i1 zeroext %icmp) 87 %r = extractelement <4 x i32> %v0, i32 0 88 ret i32 %r 89 } 90 91 ; CHECK-LABEL: _memset_vla_vector: 92 ; CHECK: andl $-16, %esp 93 ; CHECK: movl %esp, %esi 94 ; CHECK-DAG: movl $707406378, %eax # imm = 0x2A2A2A2A 95 ; CHECK-DAG: movl $32, %ecx 96 ; CHECK-DAG: movl {{.*}}, %edi 97 ; CHECK-NOT: movl {{.*}}, %esi 98 ; CHECK: rep;stosl 99 100 ; Add a test for memcmp if we ever add a special lowering for it. 101
