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