[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

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@357384 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Target/X86/X86Subtarget.cpp b/lib/Target/X86/X86Subtarget.cpp
index d6ffad0137f0e3088e806ca6c38dd81e3c418b04..177fde45911ac05292dd189574dd85767053b200 100644 (file)
--- a/lib/Target/X86/X86Subtarget.cpp
+++ b/lib/Target/X86/X86Subtarget.cpp
@@ -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::getRegBankInfo() const {
 bool X86Subtarget::enableEarlyIfConversion() const {
   return hasCMov() && X86EarlyIfConv;
 }
+
+void X86Subtarget::getPostRAMutations(
+    std::vector<std::unique_ptr<ScheduleDAGMutation>> &Mutations) const {
+  Mutations.push_back(createX86MacroFusionDAGMutation());
+}

diff --git a/lib/Target/X86/X86Subtarget.h b/lib/Target/X86/X86Subtarget.h
index 2bd36d42c5c405ecb0ea8d75e7e17a3b7eb9b8d0..b49912bae690a473b249e4c30cf90984635d33c0 100644 (file)
--- a/lib/Target/X86/X86Subtarget.h
+++ b/lib/Target/X86/X86Subtarget.h
@@ -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;
   }

diff --git a/test/CodeGen/X86/testb-je-fusion.ll b/test/CodeGen/X86/testb-je-fusion.ll
index 538baea0fbab9d2b09feb82f2b56c375469564c9..6bda84861856daf16264dccb19779424ec272b2a 100644 (file)
--- a/test/CodeGen/X86/testb-je-fusion.ll
+++ b/test/CodeGen/X86/testb-je-fusion.ll
@@ -45,8 +45,8 @@ define i32 @macrofuse_test_je(i32 %flags, i8* %p) nounwind {
 ; 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, i8* %p) nounwind {
 ;
 ; 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