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9146e8f676
Summary: The port is nearly straightforward. The only complication is related to the analyses handling, since one of the analyses used in this module pass is domtree, which is a function analysis. That requires asking for the results of each function and disallows a single interface for run-on-module pass action. Decided to copy-paste the main body of this pass. Most of its code is requesting analyses anyway, so not that much of a copy-paste. The rest of the code movement is to transform all the implementation helper functions like stripNonValidData into non-member statics. Extended all the related LLVM tests with new-pass-manager use. No failures. Reviewers: sanjoy, anna, reames Reviewed By: anna Subscribers: skatkov, llvm-commits Differential Revision: https://reviews.llvm.org/D41162 llvm-svn: 320796
83 lines
2.4 KiB
LLVM
83 lines
2.4 KiB
LLVM
; RUN: opt -rewrite-statepoints-for-gc -S < %s | FileCheck %s
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; RUN: opt -passes=rewrite-statepoints-for-gc -S < %s | FileCheck %s
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; A null test of a single value
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define i1 @test(i8 addrspace(1)* %p, i1 %rare) gc "statepoint-example" {
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; CHECK-LABEL: @test
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entry:
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%cond = icmp eq i8 addrspace(1)* %p, null
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br i1 %rare, label %safepoint, label %continue, !prof !0
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safepoint: ; preds = %entry
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call void @safepoint() [ "deopt"() ]
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br label %continue
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continue: ; preds = %safepoint, %entry
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; CHECK-LABEL: continue:
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; CHECK: phi
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; CHECK-DAG: [ %p.relocated, %safepoint ]
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; CHECK-DAG: [ %p, %entry ]
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; CHECK: %cond = icmp
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; CHECK: br i1 %cond
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; Comparing two pointers
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br i1 %cond, label %taken, label %untaken
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taken: ; preds = %continue
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ret i1 true
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untaken: ; preds = %continue
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ret i1 false
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}
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define i1 @test2(i8 addrspace(1)* %p, i8 addrspace(1)* %q, i1 %rare) gc "statepoint-example" {
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; CHECK-LABEL: @test2
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entry:
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%cond = icmp eq i8 addrspace(1)* %p, %q
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br i1 %rare, label %safepoint, label %continue, !prof !0
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safepoint: ; preds = %entry
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call void @safepoint() [ "deopt"() ]
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br label %continue
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continue: ; preds = %safepoint, %entry
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; CHECK-LABEL: continue:
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; CHECK: phi
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; CHECK-DAG: [ %q.relocated, %safepoint ]
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; CHECK-DAG: [ %q, %entry ]
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; CHECK: phi
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; CHECK-DAG: [ %p.relocated, %safepoint ]
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; CHECK-DAG: [ %p, %entry ]
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; CHECK: %cond = icmp
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; CHECK: br i1 %cond
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; Sanity check that nothing bad happens if already last instruction
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; before terminator
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br i1 %cond, label %taken, label %untaken
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taken: ; preds = %continue
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ret i1 true
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untaken: ; preds = %continue
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ret i1 false
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}
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define i1 @test3(i8 addrspace(1)* %p, i8 addrspace(1)* %q, i1 %rare) gc "statepoint-example" {
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; CHECK-LABEL: @test3
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; CHECK: gc.statepoint
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; CHECK: %cond = icmp
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; CHECK: br i1 %cond
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entry:
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call void @safepoint() [ "deopt"() ]
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%cond = icmp eq i8 addrspace(1)* %p, %q
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br i1 %cond, label %taken, label %untaken
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taken: ; preds = %entry
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ret i1 true
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untaken: ; preds = %entry
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ret i1 false
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}
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declare void @safepoint()
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!0 = !{!"branch_weights", i32 1, i32 10000}
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