derek.holloway
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87 lines
2.5 KiB
LLVM
87 lines
2.5 KiB
LLVM
;; Test cloning two paths with -basic-block-sections.
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declare void @effect(i32 zeroext)
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; RUN: echo 'v1' > %t
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; RUN: echo 'f foo' >> %t
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; RUN: echo 'p 0 3 5' >> %t
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; RUN: echo 'p 1 3 4 5' >> %t
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; RUN: echo 'c 0 3.1 5.1' >> %t
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; RUN: echo 'c 1 3.2 4.1 5.2 2 3 4 5' >> %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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; RUN: llc < %s -mtriple=x86_64-pc-linux -O0 -function-sections -basic-block-sections=%t -stop-after=bb-path-cloning | FileCheck %s --check-prefix=MIR
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define void @foo(i1 %a, i1 %b, i1 %c, i1 %d) {
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b0:
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call void @effect(i32 0)
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br i1 %a, label %b1, label %b3
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b1: ; preds = %b0
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call void @effect(i32 1)
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br i1 %b, label %b2, label %b3
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b2: ; preds = %b1
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call void @effect(i32 2)
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br label %b3
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b3: ; preds = %b0, %b1, %b2
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call void @effect(i32 3)
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br i1 %c, label %b4, label %b5
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b4: ; preds = %b3
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call void @effect(i32 4)
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br i1 %d, label %b5, label %cold
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b5: ; preds = %b3, %b4
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call void @effect(i32 5)
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ret void
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cold:
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call void @effect(i32 6) ; preds = %b4
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ret void
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}
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;; Check the cloned block ids in MIR.
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; MIR: bb.7.b3 (bb_id 3 1):
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; MIR: bb.8.b5 (bb_id 5 1):
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; MIR: bb.9.b3 (bb_id 3 2):
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; MIR: bb.10.b4 (bb_id 4 1):
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; MIR: bb.11.b5 (bb_id 5 2):
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;; Check the final layout and branches.
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;; first cluster:
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; CHECK: .section .text.foo,"ax",@progbits
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; CHECK: foo:
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; CHECK: # %bb.0: # %b0
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; CHECK: jne foo.__part.1
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; CHECK-NEXT: # %bb.7: # %b3
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; CHECK: jne .LBB0_4
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; CHECK-NEXT: # %bb.8: # %b5
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; CHECK: retq
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;; second cluster:
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; CHECK: .section .text.foo,"ax",@progbits,unique,1
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; CHECK-NEXT: foo.__part.1: # %b1
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; CHECK: jne .LBB0_2
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; CHECK-NEXT: # %bb.9: # %b3
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; CHECK: je .LBB0_5
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; CHECK-NEXT: # %bb.10: # %b4
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; CHECK: je foo.cold
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; CHECK-NEXT: # %bb.11: # %b5
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; CHECK: retq
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; CHECK-NEXT: .LBB0_2: # %b2
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; CHECK: callq effect@PLT
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; CHECK-NEXT: # %bb.3: # %b3
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; CHECK: je .LBB0_5
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; CHECK-NEXT: .LBB0_4: # %b4
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; CHECK: je foo.cold
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; CHECK-NEXT: .LBB0_5: # %b5
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; CHECK: retq
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;; split section
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; CHECK: .section .text.split.foo,"ax",@progbits
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; CHECK: foo.cold: # %cold
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