From 92cc29ae2b5c2f0e0542e12b8747ce77f3dc7ebd Mon Sep 17 00:00:00 2001
From: "Yaxun (Sam) Liu" <yaxun.liu@amd.com>
Date: Mon, 17 Feb 2020 09:19:26 -0800
Subject: [PATCH] Let HIP-Clang inline all functions by default (#1875)

This is a quick workaround to match HCC behavior for performance since inlining usually
results in more optimization opportunities therefore better performance.

We will fine tuning inline threashold later.
---
 bin/hipcc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bin/hipcc b/bin/hipcc
index 1bdb466c68..41f11a36b4 100755
--- a/bin/hipcc
+++ b/bin/hipcc
@@ -727,6 +727,10 @@ if ($HIP_PLATFORM eq "clang") {
         $HIPCXXFLAGS .= " -O3";
         $HIPLDFLAGS .= " -O3";
     }
+    if ($optArg ne "-O0") {
+        $HIPCXXFLAGS .= " -mllvm -amdgpu-early-inline-all=true -mllvm -amdgpu-function-calls=false";
+        $HIPLDFLAGS .= " -mllvm -amdgpu-early-inline-all=true -mllvm -amdgpu-function-calls=false";
+    }
     $HIP_DEVLIB_FLAGS = " --hip-device-lib-path=$DEVICE_LIB_PATH";
     $HIPCXXFLAGS .= " $HIP_DEVLIB_FLAGS";
     if (not $isWindows) {