llvm-project/lld/test/MachO/cspgo-use.ll
Ellis Hoag 85af42df5d [lld] add context-sensitive PGO options for MachO
Enable support for CSPGO for lld MachO targets.

Since lld MachO does not support `-plugin-opt=`, we need to create the `--cs-profile-generate` and `--cs-profile-path=` options and propagate them in `Darwin.cpp`. These flags are not supported by ld64.

Also outline code into `getLastCSProfileGenerateArg()` to share between `CommonArgs.cpp` and `Darwin.cpp`.

CSPGO is already implemented for ELF (https://reviews.llvm.org/D56675) and COFF (https://reviews.llvm.org/D98763).

Reviewed By: MaskRay

Differential Revision: https://reviews.llvm.org/D151589
2023-05-31 17:53:46 -07:00

19 lines
515 B
LLVM

; REQUIRES: x86
; Create an empty profile
; RUN: echo > %t.proftext
; RUN: llvm-profdata merge %t.proftext -o %t.profdata
; RUN: llvm-as %s -o %t.o
; RUN: %lld -dylib --cs-profile-path=%t.profdata %t.o -o %t --lto-debug-pass-manager 2>&1 | FileCheck %s --implicit-check-not=PGOInstrumentation
; CHECK: Running pass: PGOInstrumentationUse
target triple = "x86_64-apple-darwin"
target datalayout = "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
define void @foo() {
entry:
ret void
}