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llvm-mirror/test/Instrumentation/DataFlowSanitizer/custom_fun_varargs_attributes.ll
Peter Collingbourne ee147512c6 Fix DataFlowSanitizer instrumentation pass to take parameter position changes into account for custom functions.
When DataFlowSanitizer transforms a call to a custom function, the
new call has extra parameters. The attributes on parameters must be
updated to take the new position of each parameter into account.

Patch by Sam Kerner!

Differential Revision: https://reviews.llvm.org/D43132

llvm-svn: 325820
2018-02-22 19:09:07 +00:00

28 lines
849 B
LLVM

; RUN: opt < %s -dfsan -dfsan-args-abi -dfsan-abilist=%S/Inputs/abilist.txt -S | FileCheck %s
; RUN: opt < %s -dfsan -dfsan-abilist=%S/Inputs/abilist.txt -S | FileCheck %s
target triple = "x86_64-unknown-linux-gnu"
; Declare a custom varargs function.
declare i16 @custom_varargs(i64, ...)
; CHECK-LABEL: @"dfs$call_custom_varargs"
define void @call_custom_varargs(i8* %buf) {
;; All arguments have an annotation. Check that the transformed function
;; preserves each annotation.
; CHECK: call zeroext i16 (i64, i16, i16*, i16*, ...)
; CHECK: @__dfsw_custom_varargs
; CHECK: i64 signext 200
; CHECK: i8* nonnull
; CHECK: i64 zeroext 20
; CHECK: i32 signext 1
%call = call zeroext i16 (i64, ...) @custom_varargs(
i64 signext 200,
i8* nonnull %buf,
i64 zeroext 20,
i32 signext 1
)
ret void
}