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987e30d867
In the case where dfsan provides a custom wrapper for a function, shadow parameters are added for each parameter of the function. These parameters are i16s. For targets which do not consider this a legal type, the lack of sign extension information would cause LLVM to generate anyexts around their usage with phi variables and calling convention logic. Address this by introducing zero exts for each shadow parameter. Reviewers: pcc, slthakur Differential Revision: https://reviews.llvm.org/D33349 git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@311087 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
4.2 KiB
LLVM
101 lines
4.2 KiB
LLVM
; RUN: opt < %s -dfsan -dfsan-args-abi -dfsan-abilist=%S/Inputs/abilist.txt -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: i32 @discard(i32 %a, i32 %b)
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define i32 @discard(i32 %a, i32 %b) {
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ret i32 0
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}
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; CHECK: i32 @functional(i32 %a, i32 %b)
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define i32 @functional(i32 %a, i32 %b) {
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%c = add i32 %a, %b
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ret i32 %c
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}
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; CHECK: define i32 (i32, i32)* @discardg(i32)
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; CHECK: %[[CALL:.*]] = call { i32 (i32, i32)*, i16 } @"dfs$g"(i32 %0, i16 0)
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; CHECK: %[[XVAL:.*]] = extractvalue { i32 (i32, i32)*, i16 } %[[CALL]], 0
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; CHECK: ret {{.*}} %[[XVAL]]
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@discardg = alias i32 (i32, i32)* (i32), i32 (i32, i32)* (i32)* @g
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declare void @custom1(i32 %a, i32 %b)
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; CHECK: define linkonce_odr { i32, i16 } @"dfsw$custom2"(i32, i32, i16, i16)
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; CHECK: %[[LABELRETURN2:.*]] = alloca i16
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; CHECK: %[[RV:.*]] = call i32 @__dfsw_custom2
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; CHECK: %[[RVSHADOW:.*]] = load i16, i16* %[[LABELRETURN2]]
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; CHECK: insertvalue {{.*}}[[RV]], 0
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; CHECK: insertvalue {{.*}}[[RVSHADOW]], 1
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; CHECK: ret { i32, i16 }
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declare i32 @custom2(i32 %a, i32 %b)
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; CHECK: define linkonce_odr void @"dfsw$custom3"(i32, i16, i16*, ...)
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; CHECK: call void @__dfsan_vararg_wrapper(i8*
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; CHECK: unreachable
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declare void @custom3(i32 %a, ...)
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declare i32 @custom4(i32 %a, ...)
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declare void @customcb(i32 (i32)* %cb)
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declare i32 @cb(i32)
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; CHECK: @"dfs$f"
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define void @f(i32 %x) {
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; CHECK: %[[LABELVA2:.*]] = alloca [2 x i16]
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; CHECK: %[[LABELVA1:.*]] = alloca [2 x i16]
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; CHECK: %[[LABELRETURN:.*]] = alloca i16
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; CHECK: call void @__dfsw_custom1(i32 1, i32 2, i16 zeroext 0, i16 zeroext 0)
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call void @custom1(i32 1, i32 2)
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; CHECK: call i32 @__dfsw_custom2(i32 1, i32 2, i16 zeroext 0, i16 zeroext 0, i16* %[[LABELRETURN]])
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call i32 @custom2(i32 1, i32 2)
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; CHECK: call void @__dfsw_customcb({{.*}} @"dfst0$customcb", i8* bitcast ({{.*}} @"dfs$cb" to i8*), i16 zeroext 0)
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call void @customcb(i32 (i32)* @cb)
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; CHECK: %[[LABELVA1_0:.*]] = getelementptr inbounds [2 x i16], [2 x i16]* %[[LABELVA1]], i32 0, i32 0
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; CHECK: store i16 0, i16* %[[LABELVA1_0]]
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; CHECK: %[[LABELVA1_1:.*]] = getelementptr inbounds [2 x i16], [2 x i16]* %[[LABELVA1]], i32 0, i32 1
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; CHECK: store i16 %{{.*}}, i16* %[[LABELVA1_1]]
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; CHECK: %[[LABELVA1_0A:.*]] = getelementptr inbounds [2 x i16], [2 x i16]* %[[LABELVA1]], i32 0, i32 0
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; CHECK: call void (i32, i16, i16*, ...) @__dfsw_custom3(i32 1, i16 zeroext 0, i16* %[[LABELVA1_0A]], i32 2, i32 %{{.*}})
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call void (i32, ...) @custom3(i32 1, i32 2, i32 %x)
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; CHECK: %[[LABELVA2_0:.*]] = getelementptr inbounds [2 x i16], [2 x i16]* %[[LABELVA2]], i32 0, i32 0
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; CHECK: %[[LABELVA2_0A:.*]] = getelementptr inbounds [2 x i16], [2 x i16]* %[[LABELVA2]], i32 0, i32 0
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; CHECK: call i32 (i32, i16, i16*, i16*, ...) @__dfsw_custom4(i32 1, i16 zeroext 0, i16* %[[LABELVA2_0A]], i16* %[[LABELRETURN]], i32 2, i32 3)
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call i32 (i32, ...) @custom4(i32 1, i32 2, i32 3)
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ret void
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}
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; CHECK: @"dfs$g"
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define i32 (i32, i32)* @g(i32) {
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; CHECK: ret {{.*}} @"dfsw$custom2"
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ret i32 (i32, i32)* @custom2
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}
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; CHECK: define { i32, i16 } @"dfs$adiscard"(i32, i32, i16, i16)
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; CHECK: %[[CALL:.*]] = call i32 @discard(i32 %0, i32 %1)
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; CHECK: %[[IVAL0:.*]] = insertvalue { i32, i16 } undef, i32 %[[CALL]], 0
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; CHECK: %[[IVAL1:.*]] = insertvalue { i32, i16 } %[[IVAL0]], i16 0, 1
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; CHECK: ret { i32, i16 } %[[IVAL1]]
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@adiscard = alias i32 (i32, i32), i32 (i32, i32)* @discard
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; CHECK: declare void @__dfsw_custom1(i32, i32, i16, i16)
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; CHECK: declare i32 @__dfsw_custom2(i32, i32, i16, i16, i16*)
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; CHECK-LABEL: define linkonce_odr i32 @"dfst0$customcb"(i32 (i32)*, i32, i16, i16*)
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; CHECK: %[[BC:.*]] = bitcast i32 (i32)* %0 to { i32, i16 } (i32, i16)*
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; CHECK: %[[CALL:.*]] = call { i32, i16 } %[[BC]](i32 %1, i16 %2)
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; CHECK: %[[XVAL0:.*]] = extractvalue { i32, i16 } %[[CALL]], 0
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; CHECK: %[[XVAL1:.*]] = extractvalue { i32, i16 } %[[CALL]], 1
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; CHECK: store i16 %[[XVAL1]], i16* %3
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; CHECK: ret i32 %[[XVAL0]]
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; CHECK: declare void @__dfsw_custom3(i32, i16, i16*, ...)
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; CHECK: declare i32 @__dfsw_custom4(i32, i16, i16*, i16*, ...)
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