derek.holloway
7502bf64a4
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74 lines
3.7 KiB
LLVM
74 lines
3.7 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt < %s -passes='instcombine<max-iterations=1>' -S | FileCheck %s
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; These tests check the optimizations specific to
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; pointers being relocated at a statepoint.
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declare void @func()
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define i1 @test_null(i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_null(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
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; CHECK: right:
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: left:
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; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
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; CHECK-NEXT: ret i1 true
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;
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entry:
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br i1 %cond, label %left, label %right
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right:
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br label %merge
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left:
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%safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) null)]
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%pnew = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0)
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br label %merge
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merge:
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%pnew_phi = phi ptr addrspace(1) [null, %right], [%pnew, %left]
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%safepoint_token2 = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %pnew_phi)]
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%pnew2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0)
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%cmp = icmp eq ptr addrspace(1) %pnew2, null
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ret i1 %cmp
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}
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define ptr addrspace(1) @test_undef(i1 %cond) gc "statepoint-example" {
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; CHECK-LABEL: @test_undef(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: br i1 [[COND:%.*]], label [[LEFT:%.*]], label [[RIGHT:%.*]]
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; CHECK: right:
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; CHECK-NEXT: br label [[MERGE:%.*]]
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; CHECK: left:
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; CHECK-NEXT: [[SAFEPOINT_TOKEN:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
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; CHECK-NEXT: br label [[MERGE]]
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; CHECK: merge:
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; CHECK-NEXT: [[SAFEPOINT_TOKEN2:%.*]] = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr nonnull elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) [ "gc-live"() ]
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; CHECK-NEXT: ret ptr addrspace(1) undef
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;
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entry:
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br i1 %cond, label %left, label %right
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right:
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br label %merge
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left:
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%safepoint_token = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) undef)]
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%pnew = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token, i32 0, i32 0)
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br label %merge
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merge:
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%pnew_phi = phi ptr addrspace(1) [undef, %right], [%pnew, %left]
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%safepoint_token2 = tail call token (i64, i32, ptr, i32, i32, ...) @llvm.experimental.gc.statepoint.p0(i64 0, i32 0, ptr elementtype(void ()) @func, i32 0, i32 0, i32 0, i32 0) ["gc-live" (ptr addrspace(1) %pnew_phi)]
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%pnew2 = call ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token %safepoint_token2, i32 0, i32 0)
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ret ptr addrspace(1) %pnew2
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}
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declare token @llvm.experimental.gc.statepoint.p0(i64, i32, ptr, i32, i32, ...)
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declare ptr addrspace(1) @llvm.experimental.gc.relocate.p1(token, i32, i32)
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