43 lines
1.4 KiB
LLVM
43 lines
1.4 KiB
LLVM
;; Test for cloning a path ending with indirect branch with -basic-block-sections.
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declare void @effect(i32 zeroext)
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;; Test valid application of cloning for a path with indirect branch.
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; RUN: echo 'v1' > %t
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; RUN: echo 'f bar' >> %t
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; RUN: echo 'p 0 1' >> %t
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; RUN: echo 'c 0 1.1 2 1' >> %t
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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t | FileCheck %s
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define void @bar(i1 %a, i1 %b) {
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b0:
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call void @effect(i32 0)
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br i1 %a, label %b1, label %b2
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b1: ; preds = %b0
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call void @effect(i32 1)
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%0 = select i1 %b, ; <ptr> [#uses=1]
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ptr blockaddress(@bar, %b2),
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ptr blockaddress(@bar, %b3)
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indirectbr ptr %0, [label %b2, label %b3]
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b2: ; preds = %b0, %b1
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call void @effect(i32 2)
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ret void
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b3:
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call void @effect(i32 3) ; preds = %b1
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ret void
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}
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; CHECK: .section .text.bar,"ax",@progbits
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; CHECK: bar:
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; CHECK: # %bb.0: # %b0
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; CHECK: je .LBB0_2
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; CHECK-NEXT: # %bb.4: # %b1
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; CHECK: jmpq *%rax
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; CHECK-NEXT: .Ltmp0: # Block address taken
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; CHECK-NEXT: .LBB0_2: # %b2
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; CHECK: retq
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; CHECK-NEXT: # %bb.1: # %b1
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; CHECK: jmpq *%rax
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; CHECK: .section .text.split.bar,"ax",@progbits
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; CHECK: bar.cold: # %b3
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