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[MSan] [MIPS64] Fix vararg helper for >1 fixed argument.

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This fixes http://llvm.org/PR27646 on Mips64.

Differential Revision: http://reviews.llvm.org/D19989

llvm-svn: 268673
This commit is contained in:
Marcin Koscielnicki 2016-05-05 20:13:17 +00:00
parent 11d5c00a30
commit 9a256c4df5
3 changed files with 26 additions and 1 deletions
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3
lib/Transforms/Instrumentation/MemorySanitizer.cpp
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@ -3032,7 +3032,8 @@ struct VarArgMIPS64Helper : public VarArgHelper {
void visitCallSite(CallSite &CS, IRBuilder<> &IRB) override {
unsigned VAArgOffset = 0;
const DataLayout &DL = F.getParent()->getDataLayout();
for (CallSite::arg_iterator ArgIt = CS.arg_begin() + 1, End = CS.arg_end();
for (CallSite::arg_iterator ArgIt = CS.arg_begin() +
CS.getFunctionType()->getNumParams(), End = CS.arg_end();
ArgIt != End; ++ArgIt) {
llvm::Triple TargetTriple(F.getParent()->getTargetTriple());
Value *A = *ArgIt;

12
test/Instrumentation/MemorySanitizer/Mips/vararg-mips64.ll
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@ -41,3 +41,15 @@ define i32 @bar() {
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 8) to i64*), align 8
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 16) to i64*), align 8
; CHECK: store {{.*}} 24, {{.*}} @__msan_va_arg_overflow_size_tls
; Check multiple fixed arguments.
declare i32 @foo2(i32 %g1, i32 %g2, ...)
define i32 @bar2() {
%1 = call i32 (i32, i32, ...) @foo2(i32 0, i32 1, i64 2, double 3.000000e+00)
ret i32 %1
}
; CHECK-LABEL: @bar2
; CHECK: store i64 0, i64* getelementptr inbounds ([100 x i64], [100 x i64]* @__msan_va_arg_tls, i32 0, i32 0), align 8
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 8) to i64*), align 8
; CHECK: store {{.*}} 16, {{.*}} @__msan_va_arg_overflow_size_tls

12
test/Instrumentation/MemorySanitizer/Mips/vararg-mips64el.ll
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@ -40,3 +40,15 @@ define i32 @bar() {
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 8) to i64*), align 8
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 16) to i64*), align 8
; CHECK: store {{.*}} 24, {{.*}} @__msan_va_arg_overflow_size_tls
; Check multiple fixed arguments.
declare i32 @foo2(i32 %g1, i32 %g2, ...)
define i32 @bar2() {
%1 = call i32 (i32, i32, ...) @foo2(i32 0, i32 1, i64 2, double 3.000000e+00)
ret i32 %1
}
; CHECK-LABEL: @bar2
; CHECK: store i64 0, i64* getelementptr inbounds ([100 x i64], [100 x i64]* @__msan_va_arg_tls, i32 0, i32 0), align 8
; CHECK: store i64 0, i64* inttoptr (i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 8) to i64*), align 8
; CHECK: store {{.*}} 16, {{.*}} @__msan_va_arg_overflow_size_tls