Index: llvm/lib/Passes/PassBuilderPipelines.cpp
===================================================================
--- llvm/lib/Passes/PassBuilderPipelines.cpp
+++ llvm/lib/Passes/PassBuilderPipelines.cpp
@@ -1178,10 +1178,10 @@
   OptimizePM.addPass(Float2IntPass());
   OptimizePM.addPass(LowerConstantIntrinsicsPass());
 
-  if (EnableMatrix) {
+  if (EnableMatrix)
     OptimizePM.addPass(LowerMatrixIntrinsicsPass());
-    OptimizePM.addPass(EarlyCSEPass());
-  }
+
+  OptimizePM.addPass(EarlyCSEPass());
 
   // FIXME: We need to run some loop optimizations to re-rotate loops after
   // simplifycfg and others undo their rotation.
Index: llvm/test/Other/new-pm-defaults.ll
===================================================================
--- llvm/test/Other/new-pm-defaults.ll
+++ llvm/test/Other/new-pm-defaults.ll
@@ -226,7 +226,7 @@
 ; CHECK-O-NEXT: Running pass: Float2IntPass
 ; CHECK-O-NEXT: Running pass: LowerConstantIntrinsicsPass on foo
 ; CHECK-MATRIX: Running pass: LowerMatrixIntrinsicsPass on f
-; CHECK-MATRIX-NEXT: Running pass: EarlyCSEPass on f
+; CHECK-O-NEXT: Running pass: EarlyCSEPass
 ; CHECK-EP-VECTORIZER-START-NEXT: Running pass: NoOpFunctionPass
 ; CHECK-EXT: Running pass: {{.*}}::Bye on foo
 ; CHECK-NOEXT:  {{^}}
Index: llvm/test/Other/new-pm-thinlto-defaults.ll
===================================================================
--- llvm/test/Other/new-pm-thinlto-defaults.ll
+++ llvm/test/Other/new-pm-thinlto-defaults.ll
@@ -194,6 +194,7 @@
 ; CHECK-POSTLINK-O-NEXT: Running pass: Float2IntPass
 ; CHECK-POSTLINK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
 ; CHECK-EXT: Running pass: {{.*}}::Bye
+; CHECK-POSTLINK-O-NEXT: Running pass: EarlyCSEPass
 ; CHECK-POSTLINK-O-NEXT: Running pass: LoopSimplifyPass
 ; CHECK-POSTLINK-O-NEXT: Running pass: LCSSAPass
 ; CHECK-POSTLINK-O-NEXT: Running pass: LoopRotatePass
Index: llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
===================================================================
--- llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
+++ llvm/test/Other/new-pm-thinlto-postlink-pgo-defaults.ll
@@ -165,6 +165,7 @@
 ; CHECK-O-NEXT: Running pass: Float2IntPass
 ; CHECK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
 ; CHECK-EXT: Running pass: {{.*}}::Bye
+; CHECK-O-NEXT: Running pass: EarlyCSEPass
 ; CHECK-O-NEXT: Running pass: LoopSimplifyPass on foo
 ; CHECK-O-NEXT: Running pass: LCSSAPass on foo
 ; CHECK-O-NEXT: Running pass: LoopRotatePass
Index: llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
===================================================================
--- llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
+++ llvm/test/Other/new-pm-thinlto-postlink-samplepgo-defaults.ll
@@ -177,6 +177,7 @@
 ; CHECK-O-NEXT: Running pass: Float2IntPass
 ; CHECK-O-NEXT: Running pass: LowerConstantIntrinsicsPass
 ; CHECK-EXT: Running pass: {{.*}}::Bye
+; CHECK-O-NEXT: Running pass: EarlyCSEPass
 ; CHECK-O-NEXT: Running pass: LoopSimplifyPass
 ; CHECK-O-NEXT: Running pass: LCSSAPass
 ; CHECK-O-NEXT: Running pass: LoopRotatePass
Index: llvm/test/Transforms/Coroutines/coro-readnone-04.ll
===================================================================
--- /dev/null
+++ llvm/test/Transforms/Coroutines/coro-readnone-04.ll
@@ -0,0 +1,85 @@
+; Tests that the readnone function which don't cross suspend points could be optimized correctly.
+; RUN: opt < %s -S -passes='default<O3>' -opaque-pointers | FileCheck %s
+
+define ptr @f() "coroutine.presplit" {
+entry:
+  %id = call token @llvm.coro.id(i32 0, i8* null, i8* null, i8* null)
+  %size = call i32 @llvm.coro.size.i32()
+  %alloc = call i8* @malloc(i32 %size)
+  %hdl = call i8* @llvm.coro.begin(token %id, i8* %alloc)
+  %sus_result = call i8 @llvm.coro.suspend(token none, i1 false)
+  switch i8 %sus_result, label %suspend [i8 0, label %resume
+                                         i8 1, label %cleanup]
+resume:
+  %j = call i32 @readnone_func() readnone
+  %i = call i32 @readnone_func() readnone
+  %cmp = icmp eq i32 %i, %j
+  br i1 %cmp, label %same, label %diff
+
+same:
+  call void @print_same()
+  br label %cleanup
+
+diff:
+  call void @print_diff()
+  br label %cleanup
+
+cleanup:
+  %mem = call i8* @llvm.coro.free(token %id, i8* %hdl)
+  call void @free(i8* %mem)
+  br label %suspend
+
+suspend:
+  call i1 @llvm.coro.end(i8* %hdl, i1 0)
+  ret i8* %hdl
+}
+
+define void @g() {
+entry:
+  %j = call i32 @readnone_func() #0
+  %i = call i32 @readnone_func() #0
+  %cmp = icmp eq i32 %i, %j
+  br i1 %cmp, label %same, label %diff
+
+same:
+  call void @print_same()
+  br label %cleanup
+
+diff:
+  call void @print_diff()
+  br label %cleanup
+
+cleanup:
+  ret void
+}
+
+
+; CHECK-LABEL: void @g
+; CHECK-NEXT: entry
+; CHECK-NEXT:   call i32 @readnone_func()
+; CHECK-NEXT:   call void @print_same()
+; CHECK-NEXT:   ret void
+
+; CHECK-LABEL: void @f.resume
+; CHECK-NEXT: resume:
+; CHECK-NEXT:   call i32 @readnone_func()
+; CHECK-NEXT:   call void @print_same(
+; CHECK-NEXT:   call void @free(
+; CHECK-NEXT:   ret void 
+
+
+declare i32 @readnone_func() readnone
+
+declare void @print_same()
+declare void @print_diff()
+declare i8* @llvm.coro.free(token, i8*)
+declare i32 @llvm.coro.size.i32()
+declare i8  @llvm.coro.suspend(token, i1)
+
+declare token @llvm.coro.id(i32, i8*, i8*, i8*)
+declare i1 @llvm.coro.alloc(token)
+declare i8* @llvm.coro.begin(token, i8*)
+declare i1 @llvm.coro.end(i8*, i1)
+
+declare noalias i8* @malloc(i32)
+declare void @free(i8*)