[llvm] e7bc737 - GlobalISel: Make LoadStoreOpt preserve all

[Matt Arsenault via llvm-commits]

Author: Matt Arsenault
Date: 2022-06-25T09:24:54-04:00
New Revision: e7bc73739a00e471cb96527415e6819cebfc7e80

URL: https://github.com/llvm/llvm-project/commit/e7bc73739a00e471cb96527415e6819cebfc7e80
DIFF: https://github.com/llvm/llvm-project/commit/e7bc73739a00e471cb96527415e6819cebfc7e80.diff

LOG: GlobalISel: Make LoadStoreOpt preserve all

Avoids dropping CSE info analysis

Added: 
    

Modified: 
    llvm/lib/CodeGen/GlobalISel/LoadStoreOpt.cpp
    llvm/test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll

Removed: 
    


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diff  --git a/llvm/lib/CodeGen/GlobalISel/LoadStoreOpt.cpp b/llvm/lib/CodeGen/GlobalISel/LoadStoreOpt.cpp
index 0e56c781047a7..d4fbf7d15089b 100644
--- a/llvm/lib/CodeGen/GlobalISel/LoadStoreOpt.cpp
+++ b/llvm/lib/CodeGen/GlobalISel/LoadStoreOpt.cpp
@@ -73,6 +73,7 @@ void LoadStoreOpt::init(MachineFunction &MF) {
 
 void LoadStoreOpt::getAnalysisUsage(AnalysisUsage &AU) const {
   AU.addRequired<AAResultsWrapperPass>();
+  AU.setPreservesAll();
   getSelectionDAGFallbackAnalysisUsage(AU);
   MachineFunctionPass::getAnalysisUsage(AU);
 }

diff  --git a/llvm/test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll b/llvm/test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll
index 10bdf08a528b1..422edaa5e09ca 100644
--- a/llvm/test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll
+++ b/llvm/test/CodeGen/AArch64/GlobalISel/gisel-commandline-option.ll
@@ -61,9 +61,8 @@
 ; VERIFY-O0-NEXT:  AArch64O0PreLegalizerCombiner
 ; VERIFY-NEXT:   Verify generated machine code
 ; ENABLED-O1-NEXT: Basic Alias Analysis (stateless AA impl)
-; ENABLED-O1-NEXT: Function Alias Analysis Results 
+; ENABLED-O1-NEXT: Function Alias Analysis Results
 ; ENABLED-O1-NEXT: LoadStoreOpt
-; ENABLED-O1-NEXT:  Analysis containing CSE Info
 ; VERIFY-O0-NEXT:  Analysis containing CSE Info
 ; ENABLED-NEXT:  Legalizer
 ; VERIFY-NEXT:   Verify generated machine code