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