[PATCH] D36775: Increase tail dup threshold for -O3 from 3 to 4

[Richard Smith - zygoloid via Phabricator via llvm-commits]

This revision was automatically updated to reflect the committed changes.
Closed by commit rL311139: Increase tail dup threshold for -O3 from 3 to 4. (authored by rsmith).

Changed prior to commit:
  https://reviews.llvm.org/D36775?vs=111283&id=111584#toc

Repository:
  rL LLVM

https://reviews.llvm.org/D36775

Files:
  llvm/trunk/lib/CodeGen/MachineBlockPlacement.cpp
  llvm/trunk/test/CodeGen/Mips/brconge.ll
  llvm/trunk/test/CodeGen/Mips/brconle.ll
  llvm/trunk/test/CodeGen/X86/tail-dup-repeat.ll


Index: llvm/trunk/test/CodeGen/X86/tail-dup-repeat.ll
===================================================================
--- llvm/trunk/test/CodeGen/X86/tail-dup-repeat.ll
+++ llvm/trunk/test/CodeGen/X86/tail-dup-repeat.ll
@@ -1,4 +1,4 @@
-; RUN: llc -O3 -tail-dup-placement-threshold=4 -o - %s | FileCheck %s
+; RUN: llc -O3 -o - %s | FileCheck %s
 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
 target triple = "x86_64-unknown-linux-gnu"
 
Index: llvm/trunk/test/CodeGen/Mips/brconle.ll
===================================================================
--- llvm/trunk/test/CodeGen/Mips/brconle.ll
+++ llvm/trunk/test/CodeGen/Mips/brconle.ll
@@ -1,4 +1,4 @@
-; RUN: llc  -march=mipsel -mattr=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16
+; RUN: llc  -march=mipsel -mattr=mips16 -relocation-model=pic -O2 < %s | FileCheck %s -check-prefix=16
 
 @i = global i32 -5, align 4
 @j = global i32 10, align 4
Index: llvm/trunk/test/CodeGen/Mips/brconge.ll
===================================================================
--- llvm/trunk/test/CodeGen/Mips/brconge.ll
+++ llvm/trunk/test/CodeGen/Mips/brconge.ll
@@ -1,4 +1,4 @@
-; RUN: llc  -march=mipsel -mattr=mips16 -relocation-model=pic -O3 < %s | FileCheck %s -check-prefix=16
+; RUN: llc  -march=mipsel -mattr=mips16 -relocation-model=pic -O2 < %s | FileCheck %s -check-prefix=16
 
 @i = global i32 5, align 4
 @j = global i32 10, align 4
Index: llvm/trunk/lib/CodeGen/MachineBlockPlacement.cpp
===================================================================
--- llvm/trunk/lib/CodeGen/MachineBlockPlacement.cpp
+++ llvm/trunk/lib/CodeGen/MachineBlockPlacement.cpp
@@ -143,7 +143,7 @@
     "tail-dup-placement-aggressive-threshold",
     cl::desc("Instruction cutoff for aggressive tail duplication during "
              "layout. Used at -O3. Tail merging during layout is forced to "
-             "have a threshold that won't conflict."), cl::init(3),
+             "have a threshold that won't conflict."), cl::init(4),
     cl::Hidden);
 
 // Heuristic for tail duplication.


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