43 lines
1.7 KiB
LLVM
43 lines
1.7 KiB
LLVM
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; Check if basic blocks that don't get unique sections are placed in cold sections.
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; Basic block with id 1 and 2 must be in the cold section.
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; RUN: echo '!_Z3bazb' > %t
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; RUN: echo '!!0' >> %t
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; RUN: llc < %s -mtriple=x86_64 -function-sections -basic-block-sections=%t -unique-basic-block-section-names | FileCheck %s -check-prefix=LINUX-SECTIONS
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; RUN: llc < %s -mtriple=x86_64 -function-sections -basic-block-sections=%t -unique-basic-block-section-names -bbsections-cold-text-prefix=".text.unlikely." | FileCheck %s -check-prefix=LINUX-SPLIT
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define void @_Z3bazb(i1 zeroext %0) nounwind {
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br i1 %0, label %2, label %4
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2: ; preds = %1
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%3 = call i32 @_Z3barv()
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br label %6
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4: ; preds = %1
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%5 = call i32 @_Z3foov()
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br label %6
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6: ; preds = %2, %4
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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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; 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.1,"ax",@progbits,unique
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; Check that a single cold section is started here and id 1 and 2 blocks are placed here.
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; LINUX-SECTIONS: .section .text.split._Z3bazb,"ax",@progbits
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; LINUX-SECTIONS: _Z3bazb.cold:
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; LINUX-SECTIONS-NOT: .section .text._Z3bazb._Z3bazb.2,"ax",@progbits,unique
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; LINUX-SECTIONS: .LBB0_2:
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; LINUX-SECTIONS: .size _Z3bazb, .Lfunc_end{{[0-9]}}-_Z3bazb
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; LINUX-SPLIT: .section .text.unlikely._Z3bazb,"ax",@progbits
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; LINUX-SPLIT-NEXT: _Z3bazb.cold:
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; LINUX-SPLIT-NEXT: callq _Z3barv
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; LINUX-SPLIT: .LBB0_2:
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; LINUX-SPLIT: .LBB_END0_2:
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