1 ; RUN: opt < %s -basicaa -dse -S | FileCheck %s
2 target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
4 %struct.vec2 = type { <4 x i32>, <4 x i32> }
5 %struct.vec2plusi = type { <4 x i32>, <4 x i32>, i32 }
7 @glob1 = global %struct.vec2 zeroinitializer, align 16
8 @glob2 = global %struct.vec2plusi zeroinitializer, align 16
10 define void @write24to28(i32* nocapture %p) nounwind uwtable ssp {
11 ; CHECK-LABEL: @write24to28(
13 %arrayidx0 = getelementptr inbounds i32, i32* %p, i64 1
14 %p3 = bitcast i32* %arrayidx0 to i8*
15 ; CHECK: call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 24, i32 4, i1 false)
16 call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
17 %arrayidx1 = getelementptr inbounds i32, i32* %p, i64 7
18 store i32 1, i32* %arrayidx1, align 4
22 define void @write28to32(i32* nocapture %p) nounwind uwtable ssp {
23 ; CHECK-LABEL: @write28to32(
25 %p3 = bitcast i32* %p to i8*
26 ; CHECK: call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 28, i32 4, i1 false)
27 call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 32, i32 4, i1 false)
28 %arrayidx1 = getelementptr inbounds i32, i32* %p, i64 7
29 store i32 1, i32* %arrayidx1, align 4
33 define void @dontwrite28to32memset(i32* nocapture %p) nounwind uwtable ssp {
34 ; CHECK-LABEL: @dontwrite28to32memset(
36 %p3 = bitcast i32* %p to i8*
37 ; CHECK: call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 32, i32 16, i1 false)
38 call void @llvm.memset.p0i8.i64(i8* %p3, i8 0, i64 32, i32 16, i1 false)
39 %arrayidx1 = getelementptr inbounds i32, i32* %p, i64 7
40 store i32 1, i32* %arrayidx1, align 4
44 define void @write32to36(%struct.vec2plusi* nocapture %p) nounwind uwtable ssp {
45 ; CHECK-LABEL: @write32to36(
47 %0 = bitcast %struct.vec2plusi* %p to i8*
48 ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2plusi* @glob2 to i8*), i64 32, i32 16, i1 false)
49 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2plusi* @glob2 to i8*), i64 36, i32 16, i1 false)
50 %c = getelementptr inbounds %struct.vec2plusi, %struct.vec2plusi* %p, i64 0, i32 2
51 store i32 1, i32* %c, align 4
55 define void @write16to32(%struct.vec2* nocapture %p) nounwind uwtable ssp {
56 ; CHECK-LABEL: @write16to32(
58 %0 = bitcast %struct.vec2* %p to i8*
59 ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2* @glob1 to i8*), i64 16, i32 16, i1 false)
60 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2* @glob1 to i8*), i64 32, i32 16, i1 false)
61 %c = getelementptr inbounds %struct.vec2, %struct.vec2* %p, i64 0, i32 1
62 store <4 x i32> <i32 1, i32 2, i32 3, i32 4>, <4 x i32>* %c, align 4
66 define void @dontwrite28to32memcpy(%struct.vec2* nocapture %p) nounwind uwtable ssp {
67 ; CHECK-LABEL: @dontwrite28to32memcpy(
69 %0 = bitcast %struct.vec2* %p to i8*
70 ; CHECK: tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2* @glob1 to i8*), i64 32, i32 16, i1 false)
71 tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* bitcast (%struct.vec2* @glob1 to i8*), i64 32, i32 16, i1 false)
72 %arrayidx1 = getelementptr inbounds %struct.vec2, %struct.vec2* %p, i64 0, i32 0, i64 7
73 store i32 1, i32* %arrayidx1, align 4
77 declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture, i8* nocapture, i64, i32, i1) nounwind
78 declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i32, i1) nounwind
80 %struct.trapframe = type { i64, i64, i64 }
82 ; bugzilla 11455 - make sure negative GEP's don't break this optimisation
83 ; CHECK-LABEL: @cpu_lwp_fork(
84 define void @cpu_lwp_fork(%struct.trapframe* %md_regs, i64 %pcb_rsp0) nounwind uwtable noinline ssp {
86 %0 = inttoptr i64 %pcb_rsp0 to %struct.trapframe*
87 %add.ptr = getelementptr inbounds %struct.trapframe, %struct.trapframe* %0, i64 -1
88 %1 = bitcast %struct.trapframe* %add.ptr to i8*
89 %2 = bitcast %struct.trapframe* %md_regs to i8*
90 ; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 24, i32 1, i1 false)
91 call void @llvm.memcpy.p0i8.p0i8.i64(i8* %1, i8* %2, i64 24, i32 1, i1 false)
92 %tf_trapno = getelementptr inbounds %struct.trapframe, %struct.trapframe* %0, i64 -1, i32 1
93 store i64 3, i64* %tf_trapno, align 8