[llvm] r357384 - [X86] Make post-ra scheduling macrofusion-aware.

[Clement Courbet via llvm-commits]

Author: courbet
Date: Mon Apr  1 06:48:50 2019
New Revision: 357384

URL: http://llvm.org/viewvc/llvm-project?rev=357384&view=rev
Log:
[X86] Make post-ra scheduling macrofusion-aware.

Subscribers: MatzeB, arsenm, jvesely, nhaehnle, hiraditya, javed.absar, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D59688

Modified:
    llvm/trunk/lib/Target/X86/X86Subtarget.cpp
    llvm/trunk/lib/Target/X86/X86Subtarget.h
    llvm/trunk/test/CodeGen/X86/testb-je-fusion.ll

Modified: llvm/trunk/lib/Target/X86/X86Subtarget.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Subtarget.cpp?rev=357384&r1=357383&r2=357384&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86Subtarget.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86Subtarget.cpp Mon Apr  1 06:48:50 2019
@@ -14,6 +14,7 @@
 
 #include "X86CallLowering.h"
 #include "X86LegalizerInfo.h"
+#include "X86MacroFusion.h"
 #include "X86RegisterBankInfo.h"
 #include "X86Subtarget.h"
 #include "MCTargetDesc/X86BaseInfo.h"
@@ -366,3 +367,8 @@ const RegisterBankInfo *X86Subtarget::ge
 bool X86Subtarget::enableEarlyIfConversion() const {
   return hasCMov() && X86EarlyIfConv;
 }
+
+void X86Subtarget::getPostRAMutations(
+    std::vector<std::unique_ptr<ScheduleDAGMutation>> &Mutations) const {
+  Mutations.push_back(createX86MacroFusionDAGMutation());
+}

Modified: llvm/trunk/lib/Target/X86/X86Subtarget.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86Subtarget.h?rev=357384&r1=357383&r2=357384&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86Subtarget.h (original)
+++ llvm/trunk/lib/Target/X86/X86Subtarget.h Mon Apr  1 06:48:50 2019
@@ -843,6 +843,9 @@ public:
 
   bool enableEarlyIfConversion() const override;
 
+  void getPostRAMutations(
+      std::vector<std::unique_ptr<ScheduleDAGMutation>> &Mutations) const;
+
   AntiDepBreakMode getAntiDepBreakMode() const override {
     return TargetSubtargetInfo::ANTIDEP_CRITICAL;
   }

Modified: llvm/trunk/test/CodeGen/X86/testb-je-fusion.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/testb-je-fusion.ll?rev=357384&r1=357383&r2=357384&view=diff
==============================================================================
--- llvm/trunk/test/CodeGen/X86/testb-je-fusion.ll (original)
+++ llvm/trunk/test/CodeGen/X86/testb-je-fusion.ll Mon Apr  1 06:48:50 2019
@@ -45,8 +45,8 @@ define i32 @macrofuse_test_je(i32 %flags
 ; BRANCHFUSION_POSTRA-LABEL: macrofuse_test_je:
 ; BRANCHFUSION_POSTRA:       # %bb.0: # %entry
 ; BRANCHFUSION_POSTRA-NEXT:    xorl %eax, %eax
-; BRANCHFUSION_POSTRA-NEXT:    testl $512, %edi # imm = 0x200
 ; BRANCHFUSION_POSTRA-NEXT:    movb $1, (%rsi)
+; BRANCHFUSION_POSTRA-NEXT:    testl $512, %edi # imm = 0x200
 ; BRANCHFUSION_POSTRA-NEXT:    je .LBB0_2
 ; BRANCHFUSION_POSTRA-NEXT:  # %bb.1: # %if.then
 ; BRANCHFUSION_POSTRA-NEXT:    movl $1, %eax
@@ -105,8 +105,8 @@ define i32 @macrofuse_cmp_je(i32 %flags,
 ;
 ; BRANCHFUSION_POSTRA-LABEL: macrofuse_cmp_je:
 ; BRANCHFUSION_POSTRA:       # %bb.0: # %entry
-; BRANCHFUSION_POSTRA-NEXT:    cmpl $512, %edi # imm = 0x200
 ; BRANCHFUSION_POSTRA-NEXT:    movb $1, (%rsi)
+; BRANCHFUSION_POSTRA-NEXT:    cmpl $512, %edi # imm = 0x200
 ; BRANCHFUSION_POSTRA-NEXT:    je .LBB1_1
 ; BRANCHFUSION_POSTRA-NEXT:  # %bb.2: # %if.then
 ; BRANCHFUSION_POSTRA-NEXT:    movl $1, %eax