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| author | Igor Laevsky <igmyrj@gmail.com> | 2015-11-03 18:37:40 +0000 |
|---|---|---|
| committer | Igor Laevsky <igmyrj@gmail.com> | 2015-11-03 18:37:40 +0000 |
| commit | f637b4a52e02cab4b95472898e29318604be8889 (patch) | |
| tree | cd4722a44f256a562f11bdaf7e337fd6e47647b7 /llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll | |
| parent | 32d68fec561ea4622dbc11480c21e083f3fd7397 (diff) | |
| download | bcm5719-llvm-f637b4a52e02cab4b95472898e29318604be8889.tar.gz bcm5719-llvm-f637b4a52e02cab4b95472898e29318604be8889.zip | |
[CodegenPrepare] Do not rematerialize gc.relocates across different basic blocks
Differential Revision: http://reviews.llvm.org/D14258
llvm-svn: 251957
Diffstat (limited to 'llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll')
| -rw-r--r-- | llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll b/llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll index b6898b37311..93e17582813 100644 --- a/llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll +++ b/llvm/test/Transforms/CodeGenPrepare/statepoint-relocate.ll @@ -83,6 +83,45 @@ entry: ret i32 %ret } +define i32 @test_sor_basic_wrong_order(i32* %base) gc "statepoint-example" { +; CHECK-LABEL: @test_sor_basic_wrong_order +; Here we have base relocate inserted after derived. Make sure that we don't +; produce uses of the relocated base pointer before it's definition. +entry: + %ptr = getelementptr i32, i32* %base, i32 15 + ; CHECK: getelementptr i32, i32* %base, i32 15 + %tok = call i32 (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr) + %ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 8) + %base-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 7) + ; CHECK: %base-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 7) + ; CHECK-NEXT: getelementptr i32, i32* %base-new, i32 15 + %ret = load i32, i32* %ptr-new + ret i32 %ret +} + +define i32 @test_sor_noop_cross_bb(i1 %external-cond, i32* %base) gc "statepoint-example" { +; CHECK-LABEL: @test_sor_noop_cross_bb +; Here base relocate doesn't dominate derived relocate. Make sure that we don't +; produce undefined use of the relocated base pointer. +entry: + %ptr = getelementptr i32, i32* %base, i32 15 + ; CHECK: getelementptr i32, i32* %base, i32 15 + %tok = call i32 (i64, i32, i1 ()*, i32, i32, ...) @llvm.experimental.gc.statepoint.p0f_i1f(i64 0, i32 0, i1 ()* @return_i1, i32 0, i32 0, i32 0, i32 0, i32* %base, i32* %ptr) + br i1 %external-cond, label %left, label %right + +left: + %ptr-new = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 8) + ; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 8) + %ret-new = load i32, i32* %ptr-new + ret i32 %ret-new + +right: + %ptr-base = call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 7) + ; CHECK: call i32* @llvm.experimental.gc.relocate.p0i32(i32 %tok, i32 7, i32 7) + %ret-base = load i32, i32* %ptr-base + ret i32 %ret-base +} + declare i32 @llvm.experimental.gc.statepoint.p0f_i1f(i64, i32, i1 ()*, i32, i32, ...) declare i32* @llvm.experimental.gc.relocate.p0i32(i32, i32, i32) declare [3 x i32]* @llvm.experimental.gc.relocate.p0a3i32(i32, i32, i32) |
