[PATCH] D121567: [IROutliner] Do not outline from regions that are marked with OptNone

[Andrew Litteken via Phabricator via llvm-commits]

This revision was landed with ongoing or failed builds.
This revision was automatically updated to reflect the committed changes.
Closed by commit rG38e8880e9312: [IROutliner] Do not outlined from functions with optnone (authored by AndrewLitteken).

Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D121567/new/

https://reviews.llvm.org/D121567

Files:
  llvm/lib/Transforms/IPO/IROutliner.cpp
  llvm/test/Transforms/IROutliner/no-outlining-optnone.ll


Index: llvm/test/Transforms/IROutliner/no-outlining-optnone.ll
===================================================================
--- /dev/null
+++ llvm/test/Transforms/IROutliner/no-outlining-optnone.ll
@@ -0,0 +1,61 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
+; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
+
+; Ensure that a function is not outlined if a function has the optnone
+; attribute.
+
+define void @outline_constants1() optnone noinline {
+entry:
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %c = alloca i32, align 4
+  store i32 3, i32* %a, align 4
+  store i32 4, i32* %b, align 4
+  store i32 5, i32* %c, align 4
+  %al = load i32, i32* %a
+  %bl = load i32, i32* %b
+  %cl = load i32, i32* %c
+  ret void
+}
+
+define void @outline_constants2() optnone noinline {
+entry:
+  %a = alloca i32, align 4
+  %b = alloca i32, align 4
+  %c = alloca i32, align 4
+  store i32 2, i32* %a, align 4
+  store i32 3, i32* %b, align 4
+  store i32 4, i32* %c, align 4
+  %al = load i32, i32* %a
+  %bl = load i32, i32* %b
+  %cl = load i32, i32* %c
+  ret void
+}
+
+; CHECK-LABEL: @outline_constants1(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[B:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[C:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 3, i32* [[A]], align 4
+; CHECK-NEXT:    store i32 4, i32* [[B]], align 4
+; CHECK-NEXT:    store i32 5, i32* [[C]], align 4
+; CHECK-NEXT:    [[AL:%.*]] = load i32, i32* [[A]], align 4
+; CHECK-NEXT:    [[BL:%.*]] = load i32, i32* [[B]], align 4
+; CHECK-NEXT:    [[CL:%.*]] = load i32, i32* [[C]], align 4
+; CHECK-NEXT:    ret void
+;
+;
+; CHECK-LABEL: @outline_constants2(
+; CHECK-NEXT:  entry:
+; CHECK-NEXT:    [[A:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[B:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    [[C:%.*]] = alloca i32, align 4
+; CHECK-NEXT:    store i32 2, i32* [[A]], align 4
+; CHECK-NEXT:    store i32 3, i32* [[B]], align 4
+; CHECK-NEXT:    store i32 4, i32* [[C]], align 4
+; CHECK-NEXT:    [[AL:%.*]] = load i32, i32* [[A]], align 4
+; CHECK-NEXT:    [[BL:%.*]] = load i32, i32* [[B]], align 4
+; CHECK-NEXT:    [[CL:%.*]] = load i32, i32* [[C]], align 4
+; CHECK-NEXT:    ret void
+;
Index: llvm/lib/Transforms/IPO/IROutliner.cpp
===================================================================
--- llvm/lib/Transforms/IPO/IROutliner.cpp
+++ llvm/lib/Transforms/IPO/IROutliner.cpp
@@ -2363,6 +2363,9 @@
     if (BBHasAddressTaken)
       continue;
 
+    if (IRSC.getFunction()->hasOptNone())
+      continue;
+
     if (IRSC.front()->Inst->getFunction()->hasLinkOnceODRLinkage() &&
         !OutlineFromLinkODRs)
       continue;


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