llvm-mirror/test/MC/ELF/cgprofile.s
Michael J. Spencer cf322e810a [MC] Add assembler support for .cg_profile.
Object FIle Representation
At codegen time this is emitted into the ELF file a pair of symbol indices and a weight. In assembly it looks like:

.cg_profile a, b, 32
.cg_profile freq, a, 11
.cg_profile freq, b, 20

When writing an ELF file these are put into a SHT_LLVM_CALL_GRAPH_PROFILE (0x6fff4c02) section as (uint32_t, uint32_t, uint64_t) tuples as (from symbol index, to symbol index, weight).

Differential Revision: https://reviews.llvm.org/D44965

llvm-svn: 333823
2018-06-02 16:33:01 +00:00

100 lines
2.5 KiB
ArmAsm

# RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux-gnu %s -o - | llvm-readobj -s -t -sd -elf-cg-profile | FileCheck %s
.section .test,"aw",@progbits
a: .word b
.cg_profile a, b, 32
.cg_profile freq, a, 11
.cg_profile late, late2, 20
.cg_profile .L.local, b, 42
.globl late
late:
late2: .word 0
late3:
.L.local:
# CHECK: Name: .llvm.call-graph-profile
# CHECK-NEXT: Type: SHT_LLVM_CALL_GRAPH_PROFILE (0x6FFF4C02)
# CHECK-NEXT: Flags [ (0x80000000)
# CHECK-NEXT: SHF_EXCLUDE (0x80000000)
# CHECK-NEXT: ]
# CHECK-NEXT: Address:
# CHECK-NEXT: Offset:
# CHECK-NEXT: Size: 64
# CHECK-NEXT: Link: 6
# CHECK-NEXT: Info: 0
# CHECK-NEXT: AddressAlignment: 1
# CHECK-NEXT: EntrySize: 16
# CHECK-NEXT: SectionData (
# CHECK-NEXT: 0000: 01000000 05000000 20000000 00000000
# CHECK-NEXT: 0010: 06000000 01000000 0B000000 00000000
# CHECK-NEXT: 0020: 07000000 02000000 14000000 00000000
# CHECK-NEXT: 0030: 04000000 05000000 2A000000 00000000
# CHECK-NEXT: )
# CHECK: Symbols [
# CHECK: Name: a
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Local
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: .test
# CHECK: Name: late2
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Local
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: .test
# CHECK: Name: late3
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Local
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: .test
# CHECK: Name: b
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: Undefined
# CHECK: Name: freq
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Weak
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: Undefined
# CHECK: Name: late
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# CHECK-NEXT: Binding: Global
# CHECK-NEXT: Type:
# CHECK-NEXT: Other:
# CHECK-NEXT: Section: .test
# CHECK: CGProfile [
# CHECK-NEXT: CGProfileEntry {
# CHECK-NEXT: From: a
# CHECK-NEXT: To: b
# CHECK-NEXT: Weight: 32
# CHECK-NEXT: }
# CHECK-NEXT: CGProfileEntry {
# CHECK-NEXT: From: freq
# CHECK-NEXT: To: a
# CHECK-NEXT: Weight: 11
# CHECK-NEXT: }
# CHECK-NEXT: CGProfileEntry {
# CHECK-NEXT: From: late
# CHECK-NEXT: To: late2
# CHECK-NEXT: Weight: 20
# CHECK-NEXT: }
# CHECK-NEXT: CGProfileEntry {
# CHECK-NEXT: From:
# CHECK-NEXT: To: b
# CHECK-NEXT: Weight: 42
# CHECK-NEXT: }
# CHECK-NEXT: ]