1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
2; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
3
4; Check that multiple instances of 64-bit constants encodable as
5; 32-bit immediates are merged for code size savings.
6
7; Immediates with multiple users should not be pulled into instructions when
8; optimizing for code size (but 8-bit immediates are exceptions).
9
10define i1 @imm_multiple_users(i64 %a, i64* %b) optsize {
11; CHECK-LABEL: imm_multiple_users:
12; CHECK:       # %bb.0:
13; CHECK-NEXT:    movq $-1, (%rsi)
14; CHECK-NEXT:    cmpq $-1, %rdi
15; CHECK-NEXT:    sete %al
16; CHECK-NEXT:    retq
17  store i64 -1, i64* %b, align 8
18  %cmp = icmp eq i64 %a, -1
19  ret i1 %cmp
20}
21
22define i1 @imm_multiple_users_pgso(i64 %a, i64* %b) !prof !14 {
23; CHECK-LABEL: imm_multiple_users_pgso:
24; CHECK:       # %bb.0:
25; CHECK-NEXT:    movq $-1, (%rsi)
26; CHECK-NEXT:    cmpq $-1, %rdi
27; CHECK-NEXT:    sete %al
28; CHECK-NEXT:    retq
29  store i64 -1, i64* %b, align 8
30  %cmp = icmp eq i64 %a, -1
31  ret i1 %cmp
32}
33
34declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
35
36; Inlined memsets requiring multiple same-sized stores should be lowered using
37; the register, rather than immediate, form of stores when optimizing for
38; code size.
39define void @memset_zero(i8* noalias nocapture %D) optsize {
40; CHECK-LABEL: memset_zero:
41; CHECK:       # %bb.0:
42; CHECK-NEXT:    xorl %eax, %eax
43; CHECK-NEXT:    movq %rax, 7(%rdi)
44; CHECK-NEXT:    movq %rax, (%rdi)
45; CHECK-NEXT:    retq
46  tail call void @llvm.memset.p0i8.i64(i8* %D, i8 0, i64 15, i1 false)
47  ret void
48}
49
50define void @memset_zero_pgso(i8* noalias nocapture %D) !prof !14 {
51; CHECK-LABEL: memset_zero_pgso:
52; CHECK:       # %bb.0:
53; CHECK-NEXT:    xorl %eax, %eax
54; CHECK-NEXT:    movq %rax, 7(%rdi)
55; CHECK-NEXT:    movq %rax, (%rdi)
56; CHECK-NEXT:    retq
57  tail call void @llvm.memset.p0i8.i64(i8* %D, i8 0, i64 15, i1 false)
58  ret void
59}
60
61!llvm.module.flags = !{!0}
62!0 = !{i32 1, !"ProfileSummary", !1}
63!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
64!2 = !{!"ProfileFormat", !"InstrProf"}
65!3 = !{!"TotalCount", i64 10000}
66!4 = !{!"MaxCount", i64 10}
67!5 = !{!"MaxInternalCount", i64 1}
68!6 = !{!"MaxFunctionCount", i64 1000}
69!7 = !{!"NumCounts", i64 3}
70!8 = !{!"NumFunctions", i64 3}
71!9 = !{!"DetailedSummary", !10}
72!10 = !{!11, !12, !13}
73!11 = !{i32 10000, i64 100, i32 1}
74!12 = !{i32 999000, i64 100, i32 1}
75!13 = !{i32 999999, i64 1, i32 2}
76!14 = !{!"function_entry_count", i64 0}
77