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authorPirama Arumuga Nainar <pirama@google.com>2015-05-06 11:46:36 -0700
committerPirama Arumuga Nainar <pirama@google.com>2015-05-18 10:52:30 -0700
commit2c3e0051c31c3f5b2328b447eadf1cf9c4427442 (patch)
treec0104029af14e9f47c2ef58ca60e6137691f3c9b /test/Transforms/InstCombine/objsize-noverify.ll
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Update aosp/master LLVM for rebase to r235153
Change-Id: I9bf53792f9fc30570e81a8d80d296c681d005ea7 (cherry picked from commit 0c7f116bb6950ef819323d855415b2f2b0aad987)
Diffstat (limited to 'test/Transforms/InstCombine/objsize-noverify.ll')
-rw-r--r--test/Transforms/InstCombine/objsize-noverify.ll43
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diff --git a/test/Transforms/InstCombine/objsize-noverify.ll b/test/Transforms/InstCombine/objsize-noverify.ll
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+++ b/test/Transforms/InstCombine/objsize-noverify.ll
@@ -0,0 +1,43 @@
+; Test objectsize bounds checking that won't verify until after -instcombine.
+; RUN: opt < %s -disable-verify -instcombine -S | opt -S | FileCheck %s
+; We need target data to get the sizes of the arrays and structures.
+target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:128:128"
+
+declare i32 @llvm.objectsize.i32.p0i8(i8*, i1) nounwind readonly
+
+; CHECK-LABEL: @PR13390(
+define i32 @PR13390(i1 %bool, i8* %a) {
+entry:
+ %cond = or i1 %bool, true
+ br i1 %cond, label %return, label %xpto
+
+xpto:
+ %select = select i1 %bool, i8* %select, i8* %a
+ %select2 = select i1 %bool, i8* %a, i8* %select2
+ %0 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select, i1 true)
+ %1 = tail call i32 @llvm.objectsize.i32.p0i8(i8* %select2, i1 true)
+ %2 = add i32 %0, %1
+; CHECK: ret i32 undef
+ ret i32 %2
+
+return:
+ ret i32 42
+}
+
+; CHECK-LABEL: @PR13621(
+define i32 @PR13621(i1 %bool) nounwind {
+entry:
+ %cond = or i1 %bool, true
+ br i1 %cond, label %return, label %xpto
+
+; technically reachable, but this malformed IR may appear as a result of constant propagation
+xpto:
+ %gep2 = getelementptr i8, i8* %gep, i32 1
+ %gep = getelementptr i8, i8* %gep2, i32 1
+ %o = call i32 @llvm.objectsize.i32.p0i8(i8* %gep, i1 true)
+; CHECK: ret i32 undef
+ ret i32 %o
+
+return:
+ ret i32 7
+}