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4e50d0475a
Just as as llvm IR supports explicitly specifying numeric value ids
for instructions, and emits them by default in textual output, now do
the same for blocks.
This is a slightly incompatible change in the textual IR format.
Previously, llvm would parse numeric labels as string names. E.g.
define void @f() {
br label %"55"
55:
ret void
}
defined a label *named* "55", even without needing to be quoted, while
the reference required quoting. Now, if you intend a block label which
looks like a value number to be a name, you must quote it in the
definition too (e.g. `"55":`).
Previously, llvm would print nameless blocks only as a comment, and
would omit it if there was no predecessor. This could cause confusion
for readers of the IR, just as unnamed instructions did prior to the
addition of "%5 = " syntax, back in 2008 (PR2480).
Now, it will always print a label for an unnamed block, with the
exception of the entry block. (IMO it may be better to print it for
the entry-block as well. However, that requires updating many more
tests.)
Thus, the following is supported, and is the canonical printing:
define i32 @f(i32, i32) {
%3 = add i32 %0, %1
br label %4
4:
ret i32 %3
}
New test cases covering this behavior are added, and other tests
updated as required.
Differential Revision: https://reviews.llvm.org/D58548
llvm-svn: 356789
223 lines
8.9 KiB
LLVM
223 lines
8.9 KiB
LLVM
; Regular stack poisoning.
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; RUN: opt < %s -asan -asan-module -asan-use-after-scope=0 -S | FileCheck --check-prefixes=CHECK,ENTRY,EXIT %s
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; Stack poisoning with stack-use-after-scope.
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; RUN: opt < %s -asan -asan-module -asan-use-after-scope=1 -S | FileCheck --check-prefixes=CHECK,ENTRY-UAS,EXIT-UAS %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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declare void @Foo(i8*)
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define void @Bar() uwtable sanitize_address {
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entry:
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%x = alloca [650 x i8], align 16
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%xx = getelementptr inbounds [650 x i8], [650 x i8]* %x, i64 0, i64 0
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%y = alloca [13 x i8], align 1
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%yy = getelementptr inbounds [13 x i8], [13 x i8]* %y, i64 0, i64 0
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%z = alloca [40 x i8], align 1
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%zz = getelementptr inbounds [40 x i8], [40 x i8]* %z, i64 0, i64 0
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; CHECK: [[SHADOW_BASE:%[0-9]+]] = add i64 %{{[0-9]+}}, 17592186044416
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; F1F1F1F1
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 0
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-NEXT: store [[TYPE]] -235802127, [[TYPE]]* [[PTR]], align 1
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; 02F2F2F2F2F2F2F2
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 85
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-NEXT: store [[TYPE]] 212499257711850226, [[TYPE]]* [[PTR]], align 1
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; F2F2F2F2F2F2F2F2
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 93
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-NEXT: store [[TYPE]] -940422246894996750, [[TYPE]]* [[PTR]], align 1
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; F20005F2F2000000
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 101
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-NEXT: store [[TYPE]] -1008799775530680320, [[TYPE]]* [[PTR]], align 1
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; F3F3F3F3
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 111
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-NEXT: store [[TYPE]] -202116109, [[TYPE]]* [[PTR]], align 1
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; F3
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; ENTRY-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 115
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; ENTRY-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i8]]*
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; ENTRY-NEXT: store [[TYPE]] -13, [[TYPE]]* [[PTR]], align 1
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; F1F1F1F1
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 0
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -235802127, [[TYPE]]* [[PTR]], align 1
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; F8F8F8...
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 4
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; ENTRY-UAS-NEXT: call void @__asan_set_shadow_f8(i64 [[OFFSET]], i64 82)
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; F2F2F2F2F2F2F2F2
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 86
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -940422246894996750, [[TYPE]]* [[PTR]], align 1
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; F2F2F2F2F2F2F2F2
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 94
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -940422246894996750, [[TYPE]]* [[PTR]], align 1
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; F8F8F2F2F8F8F8F8
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 102
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -506387832706107144, [[TYPE]]* [[PTR]], align 1
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; F8F3F3F3
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 110
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -118230029, [[TYPE]]* [[PTR]], align 1
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; F3F3
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 114
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i16]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -3085, [[TYPE]]* [[PTR]], align 1
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; CHECK-LABEL: %xx = getelementptr inbounds
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; CHECK-NEXT: %yy = getelementptr inbounds
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; CHECK-NEXT: %zz = getelementptr inbounds
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call void @llvm.lifetime.start.p0i8(i64 650, i8* %xx)
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; 0000...
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 4
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; ENTRY-UAS-NEXT: call void @__asan_set_shadow_00(i64 [[OFFSET]], i64 81)
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; 02
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 85
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i8]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] 2, [[TYPE]]* [[PTR]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 650, i8* %xx)
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call void @Foo(i8* %xx)
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; CHECK-NEXT: call void @Foo(i8* %xx)
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call void @llvm.lifetime.end.p0i8(i64 650, i8* %xx)
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 4
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; ENTRY-UAS-NEXT: call void @__asan_set_shadow_f8(i64 [[OFFSET]], i64 82)
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 650, i8* %xx)
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call void @llvm.lifetime.start.p0i8(i64 13, i8* %yy)
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; 0005
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 102
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i16]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] 5, [[TYPE]]* [[PTR]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 13, i8* %yy)
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call void @Foo(i8* %yy)
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; CHECK-NEXT: call void @Foo(i8* %yy)
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call void @llvm.lifetime.end.p0i8(i64 13, i8* %yy)
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; F8F8
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 102
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i16]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -1800, [[TYPE]]* [[PTR]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 13, i8* %yy)
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call void @llvm.lifetime.start.p0i8(i64 40, i8* %zz)
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; 00000000
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 106
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 00
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 110
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i8]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 40, i8* %zz)
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call void @Foo(i8* %zz)
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; CHECK-NEXT: call void @Foo(i8* %zz)
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call void @llvm.lifetime.end.p0i8(i64 40, i8* %zz)
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; F8F8F8F8
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 106
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -117901064, [[TYPE]]* [[PTR]], align 1
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; F8
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; ENTRY-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 110
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; ENTRY-UAS-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i8]]*
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; ENTRY-UAS-NEXT: store [[TYPE]] -8, [[TYPE]]* [[PTR]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 40, i8* %zz)
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; CHECK: {{^[0-9]+}}:
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; CHECK-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 0
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; CHECK-NEXT: call void @__asan_set_shadow_f5(i64 [[OFFSET]], i64 128)
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; CHECK-NOT: add i64 [[SHADOW_BASE]]
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; CHECK: {{^[0-9]+}}:
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; 00000000
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 0
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 0000000000000000
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 85
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 0000000000000000
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 93
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 0000000000000000
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 101
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i64]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 00000000
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 111
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i32]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 00
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; EXIT-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 115
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; EXIT-NEXT: [[PTR:%[0-9]+]] = inttoptr i64 [[OFFSET]] to [[TYPE:i8]]*
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; EXIT-NEXT: store [[TYPE]] 0, [[TYPE]]* [[PTR]], align 1
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; 0000...
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; EXIT-UAS-NEXT: [[OFFSET:%[0-9]+]] = add i64 [[SHADOW_BASE]], 0
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; EXIT-UAS-NEXT: call void @__asan_set_shadow_00(i64 [[OFFSET]], i64 116)
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; CHECK-NOT: add i64 [[SHADOW_BASE]]
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ret void
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; CHECK: {{^[0-9]+}}:
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; CHECK: ret void
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}
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture)
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture)
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; CHECK-ON: declare void @__asan_set_shadow_00(i64, i64)
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; CHECK-ON: declare void @__asan_set_shadow_f1(i64, i64)
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; CHECK-ON: declare void @__asan_set_shadow_f2(i64, i64)
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; CHECK-ON: declare void @__asan_set_shadow_f3(i64, i64)
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; CHECK-ON: declare void @__asan_set_shadow_f5(i64, i64)
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; CHECK-ON: declare void @__asan_set_shadow_f8(i64, i64)
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; CHECK-OFF-NOT: declare void @__asan_set_shadow_
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