From d2f483656b0f1d57061611187dc8cf8a27035ac2 Mon Sep 17 00:00:00 2001
From: Josh Stone <jistone@redhat.com>
Date: Thu, 24 Apr 2025 14:15:58 -0700
Subject: [PATCH] Temporarily skip PGO on RHEL ppc64le

Resolves: RHEL-81600
Resolves: RHEL-81606
---
 rust.spec | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/rust.spec b/rust.spec
index 6581a02..d9e96e4 100644
--- a/rust.spec
+++ b/rust.spec
@@ -882,6 +882,9 @@ test -r "%{profiler}"
 # Skipping PGO on s390x until we get LLVM 20, due to
 # https://github.com/llvm/llvm-project/issues/124001
 %ifnarch s390x
+# rustc is exibiting signs of miscompilation on pwr9+pgo (root cause TBD),
+# so we're skipping pgo on rhel ppc64le for now.
+%if !( 0%{?rhel} && "%{_target_cpu}" == "ppc64le" )
 %if %with rustc_pgo
 # Build the compiler with profile instrumentation
 %define profraw $PWD/build/profiles
@@ -898,6 +901,7 @@ rm -r "%{profraw}" build/%{rust_triple}/stage2*/
 %global __x %{__x} --rust-profile-use="%{profdata}"
 %endif
 %endif
+%endif
 
 # Build the compiler normally (with or without PGO)
 %{__x} build sysroot