86 lines
2.7 KiB
LLVM
86 lines
2.7 KiB
LLVM
; RUN: llc < %s -mtriple=x86_64-unknown-linux-gnu -O3 | FileCheck %s
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; Function Attrs: uwtable
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; When tail-duplicating during placement, we work backward from blocks with
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; multiple successors. In this case, the block dup1 gets duplicated into dup2
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; and if.then64, and then the block dup2 only gets duplicated into land.lhs.true.
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define void @partial_tail_dup(i1 %a1, i1 %a2, ptr %a4, ptr %a5, ptr %a6, i32 %a7) #0 align 2 !prof !1 {
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; CHECK-LABEL: partial_tail_dup:
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; CHECK: # %bb.0: # %entry
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_1: # %for.cond
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; CHECK-NEXT: # =>This Inner Loop Header: Depth=1
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; CHECK-NEXT: testb $1, %dil
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; CHECK-NEXT: je .LBB0_3
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; CHECK-NEXT: # %bb.2: # %land.lhs.true
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: movl $10, (%rdx)
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; CHECK-NEXT: movl $2, (%rcx)
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; CHECK-NEXT: testl %r9d, %r9d
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; CHECK-NEXT: je .LBB0_1
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; CHECK-NEXT: jmp .LBB0_8
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_6: # %dup2
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: movl $2, (%rcx)
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; CHECK-NEXT: testl %r9d, %r9d
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; CHECK-NEXT: je .LBB0_1
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; CHECK-NEXT: jmp .LBB0_8
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; CHECK-NEXT: .p2align 4, 0x90
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; CHECK-NEXT: .LBB0_3: # %if.end56
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: testb $1, %sil
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; CHECK-NEXT: je .LBB0_5
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; CHECK-NEXT: # %bb.4: # %if.then64
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: movb $1, (%r8)
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; CHECK-NEXT: testl %r9d, %r9d
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; CHECK-NEXT: je .LBB0_1
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; CHECK-NEXT: jmp .LBB0_8
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; CHECK-NEXT: .LBB0_5: # %if.end70
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; CHECK-NEXT: # in Loop: Header=BB0_1 Depth=1
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; CHECK-NEXT: movl $12, (%rdx)
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; CHECK-NEXT: jne .LBB0_6
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; CHECK-NEXT: .LBB0_8: # %for.end
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; CHECK-NEXT: retq
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entry:
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br label %for.cond
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for.cond:
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br i1 %a1, label %land.lhs.true, label %if.end56
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land.lhs.true:
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store i32 10, ptr %a4, align 8
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br label %dup2
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if.end56:
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br i1 %a2, label %if.then64, label %if.end70, !prof !2
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if.then64:
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store i8 1, ptr %a6, align 1
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br label %dup1
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if.end70:
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store i32 12, ptr %a4, align 8
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br i1 %a2, label %dup2, label %for.end
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dup2:
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store i32 2, ptr %a5, align 4
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br label %dup1
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dup1:
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%val = load i32, ptr %a4, align 8
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%switch = icmp ult i32 %a7, 1
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br i1 %switch, label %for.cond, label %for.end, !prof !3
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for.end:
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ret void
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}
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attributes #0 = { uwtable }
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!1 = !{!"function_entry_count", i64 2}
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!2 = !{!"branch_weights", i32 5, i32 1}
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!3 = !{!"branch_weights", i32 5, i32 1}
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