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author | Nuno Lopes <nunoplopes@sapo.pt> | 2013-03-02 11:36:24 +0000 |
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committer | Nuno Lopes <nunoplopes@sapo.pt> | 2013-03-02 11:36:24 +0000 |
commit | b443a0aeac38e6fdce063224dfc746c269b0779d (patch) | |
tree | 3453d878b793977756e39b1d011acd6de1699bac /test/Transforms/InstCombine | |
parent | 2bc689c8461dfbaa4ca9a9cc4ae5bc59cb007329 (diff) | |
download | llvm-b443a0aeac38e6fdce063224dfc746c269b0779d.tar.gz llvm-b443a0aeac38e6fdce063224dfc746c269b0779d.tar.bz2 llvm-b443a0aeac38e6fdce063224dfc746c269b0779d.tar.xz |
recommit r172363 & r171325 (reverted in r172756)
This adds minimalistic support for PHI nodes to llvm.objectsize() evaluation
fingers crossed so that it does break clang boostrap again..
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@176408 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'test/Transforms/InstCombine')
-rw-r--r-- | test/Transforms/InstCombine/objsize.ll | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/test/Transforms/InstCombine/objsize.ll b/test/Transforms/InstCombine/objsize.ll index 31a3cb46e4..0ead9d1237 100644 --- a/test/Transforms/InstCombine/objsize.ll +++ b/test/Transforms/InstCombine/objsize.ll @@ -256,3 +256,131 @@ xpto: return: ret i32 7 } + +declare noalias i8* @valloc(i32) nounwind + +; CHECK: @test14 +; CHECK: ret i32 6 +define i32 @test14(i32 %a) nounwind { + switch i32 %a, label %sw.default [ + i32 1, label %sw.bb + i32 2, label %sw.bb1 + ] + +sw.bb: + %call = tail call noalias i8* @malloc(i32 6) nounwind + br label %sw.epilog + +sw.bb1: + %call2 = tail call noalias i8* @calloc(i32 3, i32 2) nounwind + br label %sw.epilog + +sw.default: + %call3 = tail call noalias i8* @valloc(i32 6) nounwind + br label %sw.epilog + +sw.epilog: + %b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ] + %1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false) + ret i32 %1 +} + +; CHECK: @test15 +; CHECK: llvm.objectsize +define i32 @test15(i32 %a) nounwind { + switch i32 %a, label %sw.default [ + i32 1, label %sw.bb + i32 2, label %sw.bb1 + ] + +sw.bb: + %call = tail call noalias i8* @malloc(i32 3) nounwind + br label %sw.epilog + +sw.bb1: + %call2 = tail call noalias i8* @calloc(i32 2, i32 1) nounwind + br label %sw.epilog + +sw.default: + %call3 = tail call noalias i8* @valloc(i32 3) nounwind + br label %sw.epilog + +sw.epilog: + %b.0 = phi i8* [ %call3, %sw.default ], [ %call2, %sw.bb1 ], [ %call, %sw.bb ] + %1 = tail call i32 @llvm.objectsize.i32(i8* %b.0, i1 false) + ret i32 %1 +} + +; CHECK: @test16 +; CHECK: llvm.objectsize +define i32 @test16(i8* %a, i32 %n) nounwind { + %b = alloca [5 x i8], align 1 + %c = alloca [5 x i8], align 1 + switch i32 %n, label %sw.default [ + i32 1, label %sw.bb + i32 2, label %sw.bb1 + ] + +sw.bb: + %bp = bitcast [5 x i8]* %b to i8* + br label %sw.epilog + +sw.bb1: + %cp = bitcast [5 x i8]* %c to i8* + br label %sw.epilog + +sw.default: + br label %sw.epilog + +sw.epilog: + %phi = phi i8* [ %a, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ] + %sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false) + ret i32 %sz +} + +; CHECK: @test17 +; CHECK: ret i32 5 +define i32 @test17(i32 %n) nounwind { + %b = alloca [5 x i8], align 1 + %c = alloca [5 x i8], align 1 + %bp = bitcast [5 x i8]* %b to i8* + switch i32 %n, label %sw.default [ + i32 1, label %sw.bb + i32 2, label %sw.bb1 + ] + +sw.bb: + br label %sw.epilog + +sw.bb1: + %cp = bitcast [5 x i8]* %c to i8* + br label %sw.epilog + +sw.default: + br label %sw.epilog + +sw.epilog: + %phi = phi i8* [ %bp, %sw.default ], [ %cp, %sw.bb1 ], [ %bp, %sw.bb ] + %sz = call i32 @llvm.objectsize.i32(i8* %phi, i1 false) + ret i32 %sz +} + +@globalalias = alias internal [60 x i8]* @a + +; CHECK: @test18 +; CHECK-NEXT: ret i32 60 +define i32 @test18() { + %bc = bitcast [60 x i8]* @globalalias to i8* + %1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false) + ret i32 %1 +} + +@globalalias2 = alias weak [60 x i8]* @a + +; CHECK: @test19 +; CHECK: llvm.objectsize +define i32 @test19() { + %bc = bitcast [60 x i8]* @globalalias2 to i8* + %1 = call i32 @llvm.objectsize.i32(i8* %bc, i1 false) + ret i32 %1 +} |