221 lines
13 KiB
LLVM
221 lines
13 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes='rewrite-statepoints-for-gc,verify<safepoint-ir>' -S | FileCheck %s
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declare void @use_obj(ptr addrspace(1)) "gc-leaf-function"
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declare void @do_safepoint()
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; Profitable test
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define i32 @test_remat(ptr addrspace(1) %base, i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_remat(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DERIVED:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE:%.*]], i32 16
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; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[HERE:%.*]], label [[THERE:%.*]]
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; CHECK: here:
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; CHECK-NEXT: [[STATEPOINT_TOKEN1:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED2:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN1]], i32 0, i32 0)
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: there:
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; CHECK-NEXT: [[STATEPOINT_TOKEN3:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED4:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN3]], i32 0, i32 0)
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[DOT0:%.*]] = phi ptr addrspace(1) [ [[BASE_RELOCATED2]], [[HERE]] ], [ [[BASE_RELOCATED4]], [[THERE]] ]
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; CHECK-NEXT: [[DERIVED_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[DOT0]], i32 16
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; CHECK-NEXT: [[RET:%.*]] = load i32, ptr addrspace(1) [[DERIVED_REMAT]], align 4
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; CHECK-NEXT: ret i32 [[RET]]
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;
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entry:
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%derived = getelementptr i32, ptr addrspace(1) %base, i32 16
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call void @do_safepoint() [ "deopt"() ]
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br i1 %cond, label %here, label %there
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here:
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call void @do_safepoint() [ "deopt"() ]
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br label %merge
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there:
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call void @do_safepoint() [ "deopt"() ]
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br label %merge
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merge:
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%ret = load i32, ptr addrspace(1) %derived
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ret i32 %ret
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}
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; Unprofitable test
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define i32 @test_many_uses(ptr addrspace(1) %base, i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_many_uses(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DERIVED:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE:%.*]], i32 16
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; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
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; CHECK-NEXT: [[DERIVED_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED]], i32 16
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[HERE:%.*]], label [[THERE:%.*]]
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; CHECK: here:
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; CHECK-NEXT: [[STATEPOINT_TOKEN3:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED4:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN3]], i32 0, i32 0)
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; CHECK-NEXT: [[DERIVED_REMAT1:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED4]], i32 16
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; CHECK-NEXT: call void @use_obj(ptr addrspace(1) [[DERIVED_REMAT1]])
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: there:
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; CHECK-NEXT: call void @use_obj(ptr addrspace(1) [[DERIVED_REMAT]])
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; CHECK-NEXT: [[STATEPOINT_TOKEN5:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED6:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN5]], i32 0, i32 0)
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; CHECK-NEXT: [[DERIVED_REMAT2:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED6]], i32 16
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[DOT0:%.*]] = phi ptr addrspace(1) [ [[DERIVED_REMAT1]], [[HERE]] ], [ [[DERIVED_REMAT2]], [[THERE]] ]
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; CHECK-NEXT: call void @use_obj(ptr addrspace(1) [[DOT0]])
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; CHECK-NEXT: [[RET:%.*]] = load i32, ptr addrspace(1) [[DOT0]], align 4
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; CHECK-NEXT: ret i32 [[RET]]
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;
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entry:
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%derived = getelementptr i32, ptr addrspace(1) %base, i32 16
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call void @do_safepoint() [ "deopt" () ]
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br i1 %cond, label %here, label %there
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here:
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call void @do_safepoint() [ "deopt"() ]
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call void @use_obj(ptr addrspace(1) %derived)
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br label %merge
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there:
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call void @use_obj(ptr addrspace(1) %derived)
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call void @do_safepoint() [ "deopt"() ]
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br label %merge
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merge:
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call void @use_obj(ptr addrspace(1) %derived)
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%ret = load i32, ptr addrspace(1) %derived
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ret i32 %ret
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}
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; Remat before phi - not implemented
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define i32 @test_phi(ptr addrspace(1) %base, i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_phi(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DERIVED1:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE:%.*]], i32 16
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; CHECK-NEXT: [[DERIVED2:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE]], i32 32
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; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
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; CHECK-NEXT: [[DERIVED2_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED]], i32 32
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; CHECK-NEXT: [[DERIVED1_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED]], i32 16
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[HERE:%.*]], label [[THERE:%.*]]
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; CHECK: here:
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: there:
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[PHI1:%.*]] = phi ptr addrspace(1) [ [[DERIVED1_REMAT]], [[HERE]] ], [ [[DERIVED2_REMAT]], [[THERE]] ]
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; CHECK-NEXT: [[RET:%.*]] = load i32, ptr addrspace(1) [[PHI1]], align 4
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; CHECK-NEXT: ret i32 [[RET]]
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;
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entry:
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%derived1 = getelementptr i32, ptr addrspace(1) %base, i32 16
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%derived2 = getelementptr i32, ptr addrspace(1) %base, i32 32
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call void @do_safepoint() [ "deopt"() ]
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br i1 %cond, label %here, label %there
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here:
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br label %merge
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there:
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br label %merge
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merge:
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%phi1 = phi ptr addrspace(1) [ %derived1, %here ], [ %derived2, %there ]
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%ret = load i32, ptr addrspace(1) %phi1
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ret i32 %ret
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}
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; Several uses per block
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; TODO: We could rematerialize once per block for several uses if there is not statepoint between
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define i32 @test_same_block_with_statepoint(ptr addrspace(1) %base, i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_same_block_with_statepoint(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[DERIVED:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE:%.*]], i32 16
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; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[HERE:%.*]], label [[THERE:%.*]]
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; CHECK: here:
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; CHECK-NEXT: [[DERIVED_REMAT3:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED]], i32 16
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; CHECK-NEXT: call void @use_obj(ptr addrspace(1) [[DERIVED_REMAT3]])
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; CHECK-NEXT: [[STATEPOINT_TOKEN4:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED5:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN4]], i32 0, i32 0)
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; CHECK-NEXT: [[DERIVED_REMAT2:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED5]], i32 16
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; CHECK-NEXT: call void @use_obj(ptr addrspace(1) [[DERIVED_REMAT2]])
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; CHECK-NEXT: [[DERIVED_REMAT1:%.*]] = getelementptr i32, ptr addrspace(1) [[BASE_RELOCATED5]], i32 16
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; CHECK-NEXT: [[DUMMY:%.*]] = load i32, ptr addrspace(1) [[DERIVED_REMAT1]], align 4
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; CHECK-NEXT: [[STATEPOINT_TOKEN6:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED5]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED7:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN6]], i32 0, i32 0)
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: there:
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; CHECK-NEXT: [[STATEPOINT_TOKEN8:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED9:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN8]], i32 0, i32 0)
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[DOT0:%.*]] = phi ptr addrspace(1) [ [[BASE_RELOCATED7]], [[HERE]] ], [ [[BASE_RELOCATED9]], [[THERE]] ]
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; CHECK-NEXT: [[DERIVED_REMAT:%.*]] = getelementptr i32, ptr addrspace(1) [[DOT0]], i32 16
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; CHECK-NEXT: [[RET:%.*]] = load i32, ptr addrspace(1) [[DERIVED_REMAT]], align 4
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; CHECK-NEXT: ret i32 [[RET]]
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;
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entry:
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%derived = getelementptr i32, ptr addrspace(1) %base, i32 16
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call void @do_safepoint() [ "deopt" () ]
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br i1 %cond, label %here, label %there
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here:
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call void @use_obj(ptr addrspace(1) %derived)
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call void @do_safepoint() [ "deopt"() ]
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call void @use_obj(ptr addrspace(1) %derived)
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%dummy = load i32, ptr addrspace(1) %derived
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call void @do_safepoint() [ "deopt" () ]
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br label %merge
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there:
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call void @do_safepoint() [ "deopt"() ]
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br label %merge
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merge:
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%ret = load i32, ptr addrspace(1) %derived
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ret i32 %ret
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}
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; Test long chain with sub-chain rematerialized
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; TODO: If we rematerialized longer chain first (%v4), then shorter on (%v0) would become dead
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define void @test_chain(ptr addrspace(1) %base, i1 %cond1) gc "statepoint-example" {
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; CHECK-LABEL: @test_chain(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[V0:%.*]] = getelementptr i8, ptr addrspace(1) [[BASE:%.*]], i64 16
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; CHECK-NEXT: [[STATEPOINT_TOKEN:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(ptr addrspace(1) [[BASE]]), "gc-live"(ptr addrspace(1) [[BASE]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN]], i32 0, i32 0)
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; CHECK-NEXT: br i1 [[COND1:%.*]], label [[BLOCK3:%.*]], label [[COMMON_RET:%.*]]
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; CHECK: block3:
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; CHECK-NEXT: [[V0_REMAT:%.*]] = getelementptr i8, ptr addrspace(1) [[BASE_RELOCATED]], i64 16
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; CHECK-NEXT: [[V4:%.*]] = getelementptr i8, ptr addrspace(1) [[V0_REMAT]], i64 70
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; CHECK-NEXT: [[STATEPOINT_TOKEN1:%.*]] = call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 2882400000, i32 0, ptr elementtype(void ()) @do_safepoint, i32 0, i32 0, i32 0, i32 0) [ "deopt"(ptr addrspace(1) [[BASE_RELOCATED]]), "gc-live"(ptr addrspace(1) [[BASE_RELOCATED]]) ]
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; CHECK-NEXT: [[BASE_RELOCATED2:%.*]] = call coldcc ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token [[STATEPOINT_TOKEN1]], i32 0, i32 0)
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; CHECK-NEXT: [[V0_REMAT_REMAT:%.*]] = getelementptr i8, ptr addrspace(1) [[BASE_RELOCATED2]], i64 16
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; CHECK-NEXT: [[V4_REMAT:%.*]] = getelementptr i8, ptr addrspace(1) [[V0_REMAT_REMAT]], i64 70
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; CHECK-NEXT: [[V5:%.*]] = load atomic i8, ptr addrspace(1) [[V4_REMAT]] unordered, align 2
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; CHECK-NEXT: br label [[COMMON_RET]]
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; CHECK: common.ret:
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; CHECK-NEXT: ret void
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;
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entry:
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%v0 = getelementptr i8, ptr addrspace(1) %base, i64 16
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call void @do_safepoint() [ "deopt"(ptr addrspace(1) %base) ]
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br i1 %cond1, label %block3, label %common.ret
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block3:
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%v4 = getelementptr i8, ptr addrspace(1) %v0, i64 70
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call void @do_safepoint() [ "deopt"(ptr addrspace(1) %base) ]
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%v5 = load atomic i8, ptr addrspace(1) %v4 unordered, align 2
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br label %common.ret
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common.ret:
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ret void
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}
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