34e70d722d
Every basic block section symbol created by -fbasic-block-sections will contain ".__part." to know that this symbol corresponds to a basic block fragment of the function. This patch solves two problems: a) Like D89617, we want function symbols with suffixes to be properly qualified so that external tools like profile aggregators know exactly what this symbol corresponds to. b) The current basic block naming just adds a ".N" to the symbol name where N is some integer. This collides with how clang creates __cxx_global_var_init.N. clang creates these symbol names to call constructor functions and basic block symbol naming should not use the same style. Fixed all the test cases and added an extra test for __cxx_global_var_init breakage. Differential Revision: https://reviews.llvm.org/D93082
47 lines
1.7 KiB
LLVM
47 lines
1.7 KiB
LLVM
; Fine-grained basic block sections, subset of basic blocks in a function.
|
|
; Only basic block with id 2 must get a section.
|
|
; RUN: echo '!_Z3bazb' > %t
|
|
; RUN: echo '!!2' >> %t
|
|
; 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
|
|
|
|
define void @_Z3bazb(i1 zeroext) nounwind {
|
|
%2 = alloca i8, align 1
|
|
%3 = zext i1 %0 to i8
|
|
store i8 %3, i8* %2, align 1
|
|
%4 = load i8, i8* %2, align 1
|
|
%5 = trunc i8 %4 to i1
|
|
br i1 %5, label %6, label %8
|
|
|
|
6: ; preds = %1
|
|
%7 = call i32 @_Z3barv()
|
|
br label %10
|
|
|
|
8: ; preds = %1
|
|
%9 = call i32 @_Z3foov()
|
|
br label %10
|
|
|
|
10: ; preds = %8, %6
|
|
ret void
|
|
}
|
|
|
|
declare i32 @_Z3barv() #1
|
|
|
|
declare i32 @_Z3foov() #1
|
|
|
|
; Check that the correct block is found using the call insts for foo and bar.
|
|
;
|
|
; LINUX-SECTIONS: .section .text._Z3bazb,"ax",@progbits
|
|
; LINUX-SECTIONS: _Z3bazb:
|
|
; Check that the basic block with id 1 doesn't get a section.
|
|
; LINUX-SECTIONS-NOT: .section .text._Z3bazb._Z3bazb.__part.{{[0-9]+}},"ax",@progbits
|
|
; LINUX-SECTIONS-LABEL: # %bb.1:
|
|
; LINUX-SECTIONS-NEXT: callq _Z3barv
|
|
; LINUX-SECTIONS: .section .text._Z3bazb.[[SECTION_LABEL:_Z3bazb.__part.[0-9]+]],"ax",@progbits
|
|
; LINUX-SECTIONS-NEXT: [[SECTION_LABEL]]:
|
|
; LINUX-SECTIONS-NEXT: callq _Z3foov
|
|
; LINUX-SECTIONS: .LBB_END0_2:
|
|
; LINUX-SECTIONS-NEXT: .size [[SECTION_LABEL]], .LBB_END0_2-[[SECTION_LABEL]]
|
|
; LINUX-SECTIONS: .section .text._Z3bazb,"ax",@progbits
|
|
; LINUX-SECTIONS: .Lfunc_end0:
|
|
; LINUX-SECTIONS-NEXT: .size _Z3bazb, .Lfunc_end0-_Z3bazb
|