47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; Fine-grained basic block sections, subset of basic blocks in a function.
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; Only basic block with id 2 must get a section.
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; RUN: echo '!_Z3bazb' > %t
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; RUN: echo '!!2' >> %t
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; RUN: llc < %s -mtriple=x86_64-pc-linux -function-sections -basic-block-sections=%t -unique-basic-block-section-names | FileCheck %s -check-prefix=LINUX-SECTIONS
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define void @_Z3bazb(i1 zeroext) nounwind {
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%2 = alloca i8, align 1
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%3 = zext i1 %0 to i8
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store i8 %3, i8* %2, align 1
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%4 = load i8, i8* %2, align 1
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%5 = trunc i8 %4 to i1
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br i1 %5, label %6, label %8
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6: ; preds = %1
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%7 = call i32 @_Z3barv()
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br label %10
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8: ; preds = %1
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%9 = call i32 @_Z3foov()
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br label %10
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10: ; preds = %8, %6
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ret void
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}
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declare i32 @_Z3barv() #1
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declare i32 @_Z3foov() #1
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; Check that the correct block is found using the call insts for foo and bar.
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;
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; LINUX-SECTIONS: .section .text._Z3bazb,"ax",@progbits
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; LINUX-SECTIONS: _Z3bazb:
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; Check that the basic block with id 1 doesn't get a section.
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; LINUX-SECTIONS-NOT: .section .text._Z3bazb._Z3bazb.__part.{{[0-9]+}},"ax",@progbits
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; LINUX-SECTIONS-LABEL: # %bb.1:
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; LINUX-SECTIONS-NEXT: callq _Z3barv
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; LINUX-SECTIONS: .section .text._Z3bazb.[[SECTION_LABEL:_Z3bazb.__part.[0-9]+]],"ax",@progbits
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; LINUX-SECTIONS-NEXT: [[SECTION_LABEL]]:
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; LINUX-SECTIONS-NEXT: callq _Z3foov
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; LINUX-SECTIONS: .LBB_END0_2:
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; LINUX-SECTIONS-NEXT: .size [[SECTION_LABEL]], .LBB_END0_2-[[SECTION_LABEL]]
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; LINUX-SECTIONS: .section .text._Z3bazb,"ax",@progbits
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; LINUX-SECTIONS: .Lfunc_end0:
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; LINUX-SECTIONS-NEXT: .size _Z3bazb, .Lfunc_end0-_Z3bazb
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