77 lines
2.4 KiB
LLVM
77 lines
2.4 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
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; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu | FileCheck %s
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; Check that multiple instances of 64-bit constants encodable as
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; 32-bit immediates are merged for code size savings.
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; Immediates with multiple users should not be pulled into instructions when
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; optimizing for code size (but 8-bit immediates are exceptions).
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define i1 @imm_multiple_users(i64 %a, i64* %b) optsize {
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; CHECK-LABEL: imm_multiple_users:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movq $-1, (%rsi)
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; CHECK-NEXT: cmpq $-1, %rdi
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; CHECK-NEXT: sete %al
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; CHECK-NEXT: retq
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store i64 -1, i64* %b, align 8
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%cmp = icmp eq i64 %a, -1
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ret i1 %cmp
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}
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define i1 @imm_multiple_users_pgso(i64 %a, i64* %b) !prof !14 {
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; CHECK-LABEL: imm_multiple_users_pgso:
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; CHECK: # %bb.0:
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; CHECK-NEXT: movq $-1, (%rsi)
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; CHECK-NEXT: cmpq $-1, %rdi
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; CHECK-NEXT: sete %al
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; CHECK-NEXT: retq
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store i64 -1, i64* %b, align 8
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%cmp = icmp eq i64 %a, -1
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ret i1 %cmp
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}
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declare void @llvm.memset.p0i8.i64(i8* nocapture, i8, i64, i1)
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; Inlined memsets requiring multiple same-sized stores should be lowered using
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; the register, rather than immediate, form of stores when optimizing for
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; code size.
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define void @memset_zero(i8* noalias nocapture %D) optsize {
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; CHECK-LABEL: memset_zero:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: movq %rax, 7(%rdi)
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; CHECK-NEXT: movq %rax, (%rdi)
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; CHECK-NEXT: retq
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tail call void @llvm.memset.p0i8.i64(i8* %D, i8 0, i64 15, i1 false)
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ret void
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}
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define void @memset_zero_pgso(i8* noalias nocapture %D) !prof !14 {
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; CHECK-LABEL: memset_zero_pgso:
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; CHECK: # %bb.0:
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; CHECK-NEXT: xorl %eax, %eax
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; CHECK-NEXT: movq %rax, 7(%rdi)
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; CHECK-NEXT: movq %rax, (%rdi)
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; CHECK-NEXT: retq
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tail call void @llvm.memset.p0i8.i64(i8* %D, i8 0, i64 15, i1 false)
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ret void
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}
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!llvm.module.flags = !{!0}
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!0 = !{i32 1, !"ProfileSummary", !1}
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!1 = !{!2, !3, !4, !5, !6, !7, !8, !9}
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!2 = !{!"ProfileFormat", !"InstrProf"}
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!3 = !{!"TotalCount", i64 10000}
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!4 = !{!"MaxCount", i64 10}
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!5 = !{!"MaxInternalCount", i64 1}
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!6 = !{!"MaxFunctionCount", i64 1000}
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!7 = !{!"NumCounts", i64 3}
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!8 = !{!"NumFunctions", i64 3}
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!9 = !{!"DetailedSummary", !10}
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!10 = !{!11, !12, !13}
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!11 = !{i32 10000, i64 100, i32 1}
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!12 = !{i32 999000, i64 100, i32 1}
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!13 = !{i32 999999, i64 1, i32 2}
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!14 = !{!"function_entry_count", i64 0}
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