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
44 lines
1.8 KiB
LLVM
44 lines
1.8 KiB
LLVM
; RUN: opt < %s -dfsan -dfsan-track-origins=1 -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_arg_tls = external thread_local(initialexec) global [[TLS_ARR:\[100 x i64\]]]
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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 @phiop(i32 %a, i32 %b, i1 %c) {
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; CHECK: @phiop.dfsan
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; CHECK: entry:
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; CHECK: [[BO:%.*]] = load i32, ptr getelementptr inbounds ([200 x i32], ptr @__dfsan_arg_origin_tls, i64 0, i64 1), align 4
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; CHECK: [[AO:%.*]] = load i32, ptr @__dfsan_arg_origin_tls, align 4
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; CHECK: [[BS:%.*]] = load i[[#SBITS]], ptr inttoptr (i64 add (i64 ptrtoint (ptr @__dfsan_arg_tls to i64), i64 2) to ptr), align [[ALIGN:2]]
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; CHECK: [[AS:%.*]] = load i[[#SBITS]], ptr @__dfsan_arg_tls, align [[ALIGN]]
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; CHECK: br i1 %c, label %next, label %done
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; CHECK: next:
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; CHECK: br i1 %c, label %T, label %F
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; CHECK: T:
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; CHECK: [[BS_NE:%.*]] = icmp ne i[[#SBITS]] [[BS]], 0
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; CHECK: [[BAO_T:%.*]] = select i1 [[BS_NE]], i32 [[BO]], i32 [[AO]]
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; CHECK: br label %done
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; CHECK: F:
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; CHECK: [[AS_NE:%.*]] = icmp ne i[[#SBITS]] [[AS]], 0
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; CHECK: [[BAO_F:%.*]] = select i1 [[AS_NE]], i32 [[AO]], i32 [[BO]]
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; CHECK: br label %done
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; CHECK: done:
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; CHECK: [[PO:%.*]] = phi i32 [ [[BAO_T]], %T ], [ [[BAO_F]], %F ], [ [[AO]], %entry ]
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; CHECK: store i32 [[PO]], ptr @__dfsan_retval_origin_tls, align 4
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entry:
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br i1 %c, label %next, label %done
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next:
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br i1 %c, label %T, label %F
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T:
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%sum = add i32 %a, %b
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br label %done
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F:
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%diff = sub i32 %b, %a
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br label %done
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done:
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%r = phi i32 [%sum, %T], [%diff, %F], [%a, %entry]
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ret i32 %r
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} |