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Diffstat (limited to 'llvm/test/Transforms/RewriteStatepointsForGC/liveness-basics.ll')
| -rw-r--r-- | llvm/test/Transforms/RewriteStatepointsForGC/liveness-basics.ll | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/llvm/test/Transforms/RewriteStatepointsForGC/liveness-basics.ll b/llvm/test/Transforms/RewriteStatepointsForGC/liveness-basics.ll deleted file mode 100644 index 457a5b20446..00000000000 --- a/llvm/test/Transforms/RewriteStatepointsForGC/liveness-basics.ll +++ /dev/null @@ -1,166 +0,0 @@ -; A collection of liveness test cases to ensure we're reporting the -; correct live values at statepoints -; RUN: opt -rewrite-statepoints-for-gc -spp-rematerialization-threshold=0 -S < %s | FileCheck %s -; RUN: opt -passes=rewrite-statepoints-for-gc -spp-rematerialization-threshold=0 -S < %s | FileCheck %s - -; Tests to make sure we consider %obj live in both the taken and untaken -; predeccessor of merge. - -define i64 addrspace(1)* @test1(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { -; CHECK-LABEL: @test1 -entry: - br i1 %cmp, label %taken, label %untaken - -taken: ; preds = %entry -; CHECK-LABEL: taken: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* -; CHECK-NEXT: bitcast -; CHECK-NEXT: br label %merge - call void @foo() [ "deopt"() ] - br label %merge - -untaken: ; preds = %entry -; CHECK-LABEL: untaken: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %obj.relocated2 = call coldcc i8 addrspace(1)* -; CHECK-NEXT: bitcast -; CHECK-NEXT: br label %merge - call void @foo() [ "deopt"() ] - br label %merge - -merge: ; preds = %untaken, %taken -; CHECK-LABEL: merge: -; CHECK-NEXT: %.0 = phi i64 addrspace(1)* [ %obj.relocated.casted, %taken ], [ %obj.relocated2.casted, %untaken ] -; CHECK-NEXT: ret i64 addrspace(1)* %.0 -; A local kill should not effect liveness in predecessor block - ret i64 addrspace(1)* %obj -} - -define i64 addrspace(1)* @test2(i1 %cmp, i64 addrspace(1)** %loc) gc "statepoint-example" { -; CHECK-LABEL: @test2 -entry: -; CHECK-LABEL: entry: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: br - call void @foo() [ "deopt"() ] - br i1 %cmp, label %taken, label %untaken - -taken: ; preds = %entry -; CHECK-LABEL: taken: -; CHECK-NEXT: %obj = load -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: gc.relocate -; CHECK-NEXT: bitcast -; CHECK-NEXT: ret i64 addrspace(1)* %obj.relocated.casted -; A local kill should effect values live from a successor phi. Also, we -; should only propagate liveness from a phi to the appropriate predecessors. - %obj = load i64 addrspace(1)*, i64 addrspace(1)** %loc - call void @foo() [ "deopt"() ] - ret i64 addrspace(1)* %obj - -untaken: ; preds = %entry - ret i64 addrspace(1)* null -} - -define i64 addrspace(1)* @test3(i1 %cmp, i64 addrspace(1)** %loc) gc "statepoint-example" { -; CHECK-LABEL: @test3 -entry: - br i1 %cmp, label %taken, label %untaken - -taken: ; preds = %entry -; CHECK-LABEL: taken: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %obj = load -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* -; CHECK-NEXT: bitcast -; CHECK-NEXT: br label %merge - call void @foo() [ "deopt"() ] - %obj = load i64 addrspace(1)*, i64 addrspace(1)** %loc - call void @foo() [ "deopt"() ] - br label %merge - -untaken: ; preds = %entry -; CHECK-LABEL: taken: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: br label %merge -; A base pointer must be live if it is needed at a later statepoint, -; even if the base pointer is otherwise unused. - call void @foo() [ "deopt"() ] - br label %merge - -merge: ; preds = %untaken, %taken - %phi = phi i64 addrspace(1)* [ %obj, %taken ], [ null, %untaken ] - ret i64 addrspace(1)* %phi -} - -define i64 addrspace(1)* @test4(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { -; CHECK-LABEL: @test4 -entry: -; CHECK-LABEL: entry: -; CHECK-NEXT: %derived = getelementptr -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %derived.relocated = -; CHECK-NEXT: bitcast -; CHECK-NEXT: %obj.relocated = -; CHECK-NEXT: bitcast -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %derived.relocated2 = -; CHECK-NEXT: bitcast - -; Note: It's legal to relocate obj again, but not strictly needed -; CHECK-NEXT: %obj.relocated3 = -; CHECK-NEXT: bitcast -; CHECK-NEXT: ret i64 addrspace(1)* %derived.relocated2.casted -; -; Make sure that a phi def visited during iteration is considered a kill. -; Also, liveness after base pointer analysis can change based on new uses, -; not just new defs. - %derived = getelementptr i64, i64 addrspace(1)* %obj, i64 8 - call void @foo() [ "deopt"() ] - call void @foo() [ "deopt"() ] - ret i64 addrspace(1)* %derived -} - -declare void @consume(...) readonly "gc-leaf-function" - -define i64 addrspace(1)* @test5(i1 %cmp, i64 addrspace(1)* %obj) gc "statepoint-example" { -; CHECK-LABEL: @test5 -entry: - br i1 %cmp, label %taken, label %untaken - -taken: ; preds = %entry -; CHECK-LABEL: taken: -; CHECK-NEXT: gc.statepoint -; CHECK-NEXT: %obj.relocated = call coldcc i8 addrspace(1)* -; CHECK-NEXT: bitcast -; CHECK-NEXT: br label %merge - call void @foo() [ "deopt"() ] - br label %merge - -untaken: ; preds = %entry -; CHECK-LABEL: untaken: -; CHECK-NEXT: br label %merge - br label %merge - -merge: ; preds = %untaken, %taken -; CHECK-LABEL: merge: -; CHECK-NEXT: %.0 = phi i64 addrspace(1)* -; CHECK-NEXT: %obj2a = phi -; CHECK-NEXT: @consume -; CHECK-NEXT: br label %final - %obj2a = phi i64 addrspace(1)* [ %obj, %taken ], [ null, %untaken ] - call void (...) @consume(i64 addrspace(1)* %obj2a) - br label %final - -final: ; preds = %merge -; CHECK-LABEL: final: -; CHECK-NEXT: @consume -; CHECK-NEXT: ret i64 addrspace(1)* %.0 - call void (...) @consume(i64 addrspace(1)* %obj2a) - ret i64 addrspace(1)* %obj -} - -declare void @foo() - |
