86 lines · plain
1; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -O3 | FileCheck %s2 3; Function Attrs: uwtable4; When tail-duplicating during placement, we work backward from blocks with5; multiple successors. In this case, the block dup1 gets duplicated into dup26; and if.then64, and then the block dup2 only gets duplicated into land.lhs.true.7 8define void @partial_tail_dup(i1 %a1, i1 %a2, ptr %a4, ptr %a5, ptr %a6, i32 %a7) #0 align 2 !prof !1 {9; CHECK-LABEL: partial_tail_dup:10; CHECK: # %bb.0: # %entry11; CHECK-NEXT: .p2align 412; CHECK-NEXT: .LBB0_1: # %for.cond13; CHECK-NEXT: # =>This Inner Loop Header: Depth=114; CHECK-NEXT: testb $1, %dil15; CHECK-NEXT: je .LBB0_316; CHECK-NEXT: # %bb.2: # %land.lhs.true17; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=118; CHECK-NEXT: movl $10, (%rdx)19; CHECK-NEXT: movl $2, (%rcx)20; CHECK-NEXT: testl %r9d, %r9d21; CHECK-NEXT: je .LBB0_122; CHECK-NEXT: jmp .LBB0_823; CHECK-NEXT: .p2align 424; CHECK-NEXT: .LBB0_6: # %dup225; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=126; CHECK-NEXT: movl $2, (%rcx)27; CHECK-NEXT: testl %r9d, %r9d28; CHECK-NEXT: je .LBB0_129; CHECK-NEXT: jmp .LBB0_830; CHECK-NEXT: .p2align 431; CHECK-NEXT: .LBB0_3: # %if.end5632; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=133; CHECK-NEXT: testb $1, %sil34; CHECK-NEXT: je .LBB0_535; CHECK-NEXT: # %bb.4: # %if.then6436; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=137; CHECK-NEXT: movb $1, (%r8)38; CHECK-NEXT: testl %r9d, %r9d39; CHECK-NEXT: je .LBB0_140; CHECK-NEXT: jmp .LBB0_841; CHECK-NEXT: .LBB0_5: # %if.end7042; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=143; CHECK-NEXT: movl $12, (%rdx)44; CHECK-NEXT: jne .LBB0_6 45; CHECK-NEXT: .LBB0_8: # %for.end46; CHECK-NEXT: retq47entry:48 br label %for.cond49 50for.cond: 51 br i1 %a1, label %land.lhs.true, label %if.end5652 53land.lhs.true: 54 store i32 10, ptr %a4, align 855 br label %dup256 57if.end56: 58 br i1 %a2, label %if.then64, label %if.end70, !prof !259 60if.then64: 61 store i8 1, ptr %a6, align 162 br label %dup163 64if.end70: 65 store i32 12, ptr %a4, align 866 br i1 %a2, label %dup2, label %for.end67 68dup2: 69 store i32 2, ptr %a5, align 470 br label %dup171 72dup1: 73 %val = load i32, ptr %a4, align 874 %switch = icmp ult i32 %a7, 175 br i1 %switch, label %for.cond, label %for.end, !prof !376 77for.end: 78 ret void79}80 81attributes #0 = { uwtable }82 83!1 = !{!"function_entry_count", i64 2}84!2 = !{!"branch_weights", i32 5, i32 1}85!3 = !{!"branch_weights", i32 5, i32 1}86