41d5033eb1
This enabled opaque pointers by default in LLVM. The effect of this is twofold: * If IR that contains *neither* explicit ptr nor %T* types is passed to tools, we will now use opaque pointer mode, unless -opaque-pointers=0 has been explicitly passed. * Users of LLVM as a library will now default to opaque pointers. It is possible to opt-out by calling setOpaquePointers(false) on LLVMContext. A cmake option to toggle this default will not be provided. Frontends or other tools that want to (temporarily) keep using typed pointers should disable opaque pointers via LLVMContext. Differential Revision: https://reviews.llvm.org/D126689
30 lines
1.1 KiB
LLVM
30 lines
1.1 KiB
LLVM
; RUN: opt < %s -dfsan -S | FileCheck %s
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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; CHECK: @__dfsan_shadow_width_bits = weak_odr constant i32 [[#SBITS:]]
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; CHECK: @__dfsan_shadow_width_bytes = weak_odr constant i32 [[#SBYTES:]]
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define {i32, i32} @test({i32, i32} %a, i1 %c) {
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; CHECK: %[[#AL:]] = load { i[[#SBITS]], i[[#SBITS]] }, ptr @__dfsan_arg_tls, align [[ALIGN:2]]
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; CHECK: %[[#AL0:]] = insertvalue { i[[#SBITS]], i[[#SBITS]] } %[[#AL]], i[[#SBITS]] 0, 0
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; CHECK: %[[#AL1:]] = insertvalue { i[[#SBITS]], i[[#SBITS]] } %[[#AL]], i[[#SBITS]] 0, 1
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; CHECK: %[[#PL:]] = phi { i[[#SBITS]], i[[#SBITS]] } [ %[[#AL0]], %T ], [ %[[#AL1]], %F ]
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; CHECK: store { i[[#SBITS]], i[[#SBITS]] } %[[#PL]], ptr @__dfsan_retval_tls, align [[ALIGN]]
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entry:
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br i1 %c, label %T, label %F
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T:
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%at = insertvalue {i32, i32} %a, i32 1, 0
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br label %done
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F:
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%af = insertvalue {i32, i32} %a, i32 1, 1
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br label %done
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done:
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%b = phi {i32, i32} [%at, %T], [%af, %F]
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ret {i32, i32} %b
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}
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