[lld] [LLD][ELF] add bp-* options in ELF (PR #120514)

[Fangrui Song via llvm-commits]

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+# REQUIRES: aarch64
+
+# RUN: rm -rf %t && split-file %s %t && cd %t
+
+# RUN: llvm-mc -filetype=obj -triple=aarch64 a.s -o a.o
+# RUN: llvm-profdata merge a.proftext -o a.profdata
+# RUN: ld.lld -e main -o a.out a.o --irpgo-profile=a.profdata --bp-startup-sort=function --verbose-bp-section-orderer --icf=all 2>&1 | FileCheck %s --check-prefix=STARTUP
+
+# STARTUP: Ordered 3 sections using balanced partitioning
+
+# RUN: ld.lld -e main -o - a.o --symbol-ordering-file a.orderfile --irpgo-profile=a.profdata --bp-startup-sort=function | llvm-nm --numeric-sort --format=just-symbols - | FileCheck %s --check-prefix=ORDERFILE
+# RUN: ld.lld -e main -o - a.o --symbol-ordering-file a.orderfile --bp-compression-sort=both | llvm-nm --numeric-sort --format=just-symbols - | FileCheck %s --check-prefix=ORDERFILE
+
+# Rodata
+# ORDERFILE: s2
+# ORDERFILE: s1
+# ORDERFILE-DAG: s3
+
+# Functions
+# ORDERFILE: A
+# ORDERFILE: F
+# ORDERFILE: E
+# ORDERFILE: D
+# ORDERFILE-DAG: main
+# ORDERFILE-DAG: B
+# ORDERFILE-DAG: C
+
+# Data
+# ORDERFILE: r3
+# ORDERFILE: r2
+# ORDERFILE-DAG: r1
+# ORDERFILE-DAG: r4
+
+# RUN: ld.lld -e main -o a.out a.o --verbose-bp-section-orderer --bp-compression-sort=function 2>&1 | FileCheck %s --check-prefix=COMPRESSION-FUNC
+# RUN: ld.lld -e main -o a.out a.o --verbose-bp-section-orderer --bp-compression-sort=data 2>&1 | FileCheck %s --check-prefix=COMPRESSION-DATA
+# RUN: ld.lld -e main -o a.out a.o --verbose-bp-section-orderer --bp-compression-sort=both 2>&1 | FileCheck %s --check-prefix=COMPRESSION-BOTH
+# RUN: ld.lld -e main -o a.out a.o --verbose-bp-section-orderer --bp-compression-sort=both --irpgo-profile=a.profdata --bp-startup-sort=function 2>&1 | FileCheck %s --check-prefix=COMPRESSION-BOTH
+
+# COMPRESSION-FUNC: Ordered 7 sections using balanced partitioning
+# COMPRESSION-DATA: Ordered 7 sections using balanced partitioning
+# COMPRESSION-BOTH: Ordered 14 sections using balanced partitioning
+
+# RUN: not ld.lld -o /dev/null --bp-compression-sort=malformed 2>&1 | FileCheck %s --check-prefix=COMPRESSION-MALFORM
+# COMPRESSION-MALFORM: unknown value 'malformed' for --bp-compression-sort=
+# RUN: not ld.lld -o /dev/null --bp-startup-sort=function 2>&1 | FileCheck %s --check-prefix=IRPGO-STARTUP
+# IRPGO-STARTUP: --bp-startup-sort=function must be used with --irpgo-profile
+# RUN: not ld.lld -o /dev/null --bp-compression-sort-startup-functions 2>&1 | FileCheck %s --check-prefix=STARTUP-COMPRESSION
+# STARTUP-COMPRESSION: --bp-compression-sort-startup-functions must be used with --irpgo-profile
----------------
MaskRay wrote:

Error message checks must start with `error: `

https://github.com/llvm/llvm-project/pull/120514