1 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2 ; RUN: llc < %s -mtriple=x86_64-unknown-unknown | FileCheck %s
4 define void @merge_store(i32* nocapture %a) {
5 ; CHECK-LABEL: merge_store:
6 ; CHECK: # %bb.0: # %entry
7 ; CHECK-NEXT: xorl %eax, %eax
8 ; CHECK-NEXT: movabsq $4294967297, %rcx # imm = 0x100000001
9 ; CHECK-NEXT: .p2align 4, 0x90
10 ; CHECK-NEXT: .LBB0_1: # %for.body
11 ; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
12 ; CHECK-NEXT: movq %rcx, (%rdi,%rax,4)
13 ; CHECK-NEXT: movq %rcx, 8(%rdi,%rax,4)
14 ; CHECK-NEXT: addq $4, %rax
15 ; CHECK-NEXT: cmpl $1000, %eax # imm = 0x3E8
16 ; CHECK-NEXT: jl .LBB0_1
17 ; CHECK-NEXT: # %bb.2: # %for.end
23 %indvars.iv = phi i64 [ 0, %entry ], [ %indvars.iv.next, %for.body ]
24 %arrayidx = getelementptr inbounds i32, i32* %a, i64 %indvars.iv
25 store i32 1, i32* %arrayidx, align 4
26 %0 = or i64 %indvars.iv, 1
27 %arrayidx2 = getelementptr inbounds i32, i32* %a, i64 %0
28 store i32 1, i32* %arrayidx2, align 4
29 %1 = or i64 %indvars.iv, 2
30 %arrayidx5 = getelementptr inbounds i32, i32* %a, i64 %1
31 store i32 1, i32* %arrayidx5, align 4
32 %2 = or i64 %indvars.iv, 3
33 %arrayidx8 = getelementptr inbounds i32, i32* %a, i64 %2
34 store i32 1, i32* %arrayidx8, align 4
35 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 4
36 %3 = trunc i64 %indvars.iv.next to i32
37 %cmp = icmp slt i32 %3, 1000
38 br i1 %cmp, label %for.body, label %for.end
44 define void @indexed_store_merge(i64 %p, i8* %v) {
45 ; CHECK-LABEL: indexed_store_merge:
46 ; CHECK: # %bb.0: # %entry
47 ; CHECK-NEXT: movl $0, 2(%rdi,%rsi)
48 ; CHECK-NEXT: movb $0, (%rsi)
51 %p2 = add nsw i64 %p, 2
52 %v2 = getelementptr i8, i8* %v, i64 %p2
53 store i8 0, i8* %v2, align 2
54 %p3 = add nsw i64 %p, 3
55 %v3 = getelementptr i8, i8* %v, i64 %p3
56 store i8 0, i8* %v3, align 1
57 %p4 = add nsw i64 %p, 4
58 %v4 = getelementptr i8, i8* %v, i64 %p4
59 store i8 0, i8* %v4, align 2
60 %p5 = add nsw i64 %p, 5
61 %v5 = getelementptr i8, i8* %v, i64 %p5
62 store i8 0, i8* %v5, align 1
63 %v0 = getelementptr i8, i8* %v, i64 0
64 store i8 0, i8* %v0, align 2