br i1 %cmp, label %cond.true, label %cond.false
cond.true:
- %1 = load i8** %retval;
- ret i8* %1;
+ %1 = load i8** %retval
+ ret i8* %1
cond.false:
- %2 = load i8** %retval;
- ret i8* %2;
+ %2 = load i8** %retval
+ ret i8* %2
}
define i32 @f() nounwind {
define i1 @baz() nounwind {
; CHECK: @baz
-; CHECK-NEXT: llvm.objectsize.i32
+; CHECK-NEXT: objectsize
%1 = tail call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 0), i1 false)
%2 = icmp eq i32 %1, -1
ret i1 %2
}
-declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
\ No newline at end of file
+define void @test1(i8* %q, i32 %x) nounwind noinline {
+; CHECK: @test1
+; CHECK: objectsize.i32
+entry:
+ %0 = call i32 @llvm.objectsize.i32(i8* getelementptr inbounds ([0 x i8]* @window, i32 0, i32 10), i1 false) ; <i64> [#uses=1]
+ %1 = icmp eq i32 %0, -1 ; <i1> [#uses=1]
+ br i1 %1, label %"47", label %"46"
+
+"46": ; preds = %entry
+ unreachable
+
+"47": ; preds = %entry
+ unreachable
+}
+
+@.str5 = private constant [9 x i32] [i32 97, i32 98, i32 99, i32 100, i32 0, i32
+ 101, i32 102, i32 103, i32 0], align 4
+define i32 @test2() nounwind {
+; CHECK: @test2
+; CHECK-NEXT: ret i32 34
+ %1 = call i32 @llvm.objectsize.i32(i8* getelementptr (i8* bitcast ([9 x i32]* @.str5 to i8*), i32 2), i1 false)
+ ret i32 %1
+}
+
+; rdar://7674946
+@array = internal global [480 x float] zeroinitializer ; <[480 x float]*> [#uses=1]
+
+declare i8* @__memcpy_chk(i8*, i8*, i32, i32) nounwind
+
+declare i32 @llvm.objectsize.i32(i8*, i1) nounwind readonly
+
+declare i8* @__inline_memcpy_chk(i8*, i8*, i32) nounwind inlinehint
+
+define void @test3() nounwind {
+; CHECK: @test3
+entry:
+ br i1 undef, label %bb11, label %bb12
+
+bb11:
+ %0 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
+ %1 = bitcast float* %0 to i8* ; <i8*> [#uses=1]
+ %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) ; <i32> [#uses=1]
+ %3 = call i8* @__memcpy_chk(i8* undef, i8* undef, i32 512, i32 %2) nounwind ; <i8*> [#uses=0]
+; CHECK: unreachable
+ unreachable
+
+bb12:
+ %4 = getelementptr inbounds float* getelementptr inbounds ([480 x float]* @array, i32 0, i32 128), i32 -127 ; <float*> [#uses=1]
+ %5 = bitcast float* %4 to i8* ; <i8*> [#uses=1]
+ %6 = call i8* @__inline_memcpy_chk(i8* %5, i8* undef, i32 512) nounwind inlinehint ; <i8*> [#uses=0]
+; CHECK: @__inline_memcpy_chk
+ unreachable
+}
+
+; rdar://7718857
+
+%struct.data = type { [100 x i32], [100 x i32], [1024 x i8] }
+
+define i32 @test4(i8** %esc) nounwind ssp {
+; CHECK: @test4
+entry:
+ %0 = alloca %struct.data, align 8
+ %1 = bitcast %struct.data* %0 to i8*
+ %2 = call i32 @llvm.objectsize.i32(i8* %1, i1 false) nounwind
+; CHECK-NOT: @llvm.objectsize
+; CHECK: @llvm.memset.p0i8.i32(i8* %1, i8 0, i32 1824, i32 8, i1 false)
+ %3 = call i8* @__memset_chk(i8* %1, i32 0, i32 1824, i32 %2) nounwind
+ store i8* %1, i8** %esc
+ ret i32 0
+}
+
+; rdar://7782496
+@s = external global i8*
+
+define i8* @test5(i32 %n) nounwind ssp {
+; CHECK: @test5
+entry:
+ %0 = tail call noalias i8* @malloc(i32 20) nounwind
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
+ %2 = load i8** @s, align 8
+; CHECK-NOT: @llvm.objectsize
+; CHECK: @llvm.memcpy.p0i8.p0i8.i32(i8* %0, i8* %1, i32 10, i32 1, i1 false)
+ %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 10, i32 %1) nounwind
+ ret i8* %0
+}
+
+define void @test6(i32 %n) nounwind ssp {
+; CHECK: @test6
+entry:
+ %0 = tail call noalias i8* @malloc(i32 20) nounwind
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %0, i1 false)
+ %2 = load i8** @s, align 8
+; CHECK-NOT: @llvm.objectsize
+; CHECK: @__memcpy_chk(i8* %0, i8* %1, i32 30, i32 20)
+ %3 = tail call i8* @__memcpy_chk(i8* %0, i8* %2, i32 30, i32 %1) nounwind
+ ret void
+}
+
+declare i8* @__memset_chk(i8*, i32, i32, i32) nounwind
+
+declare noalias i8* @malloc(i32) nounwind
+
+define i32 @test7(i8** %esc) {
+; CHECK: @test7
+ %alloc = call noalias i8* @malloc(i32 48) nounwind
+ store i8* %alloc, i8** %esc
+ %gep = getelementptr inbounds i8* %alloc, i32 16
+ %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
+; CHECK: ret i32 32
+ ret i32 %objsize
+}
+
+declare noalias i8* @calloc(i32, i32) nounwind
+
+define i32 @test8(i8** %esc) {
+; CHECK: @test8
+ %alloc = call noalias i8* @calloc(i32 5, i32 7) nounwind
+ store i8* %alloc, i8** %esc
+ %gep = getelementptr inbounds i8* %alloc, i32 5
+ %objsize = call i32 @llvm.objectsize.i32(i8* %gep, i1 false) nounwind readonly
+; CHECK: ret i32 30
+ ret i32 %objsize
+}
+
+declare noalias i8* @strdup(i8* nocapture) nounwind
+declare noalias i8* @strndup(i8* nocapture, i32) nounwind
+
+; CHECK: @test9
+define i32 @test9(i8** %esc) {
+ %call = tail call i8* @strdup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0)) nounwind
+ store i8* %call, i8** %esc, align 8
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+ ret i32 %1
+}
+
+; CHECK: @test10
+define i32 @test10(i8** %esc) {
+ %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 3) nounwind
+ store i8* %call, i8** %esc, align 8
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 4
+ ret i32 %1
+}
+
+; CHECK: @test11
+define i32 @test11(i8** %esc) {
+ %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 7) nounwind
+ store i8* %call, i8** %esc, align 8
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+ ret i32 %1
+}
+
+; CHECK: @test12
+define i32 @test12(i8** %esc) {
+ %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 8) nounwind
+ store i8* %call, i8** %esc, align 8
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+ ret i32 %1
+}
+
+; CHECK: @test13
+define i32 @test13(i8** %esc) {
+ %call = tail call i8* @strndup(i8* getelementptr inbounds ([8 x i8]* @.str, i64 0, i64 0), i32 57) nounwind
+ store i8* %call, i8** %esc, align 8
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %call, i1 true)
+; CHECK: ret i32 8
+ ret i32 %1
+}
+
+; CHECK: @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(i8* %select, i1 true)
+ %1 = tail call i32 @llvm.objectsize.i32(i8* %select2, i1 true)
+ %2 = add i32 %0, %1
+; CHECK: ret i32 undef
+ ret i32 %2
+
+return:
+ ret i32 42
+}
+
+; CHECK: @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* %gep, i32 1
+ %gep = getelementptr i8* %gep2, i32 1
+ %o = call i32 @llvm.objectsize.i32(i8* %gep, i1 true)
+; CHECK: ret i32 undef
+ ret i32 %o
+
+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
+}
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