193 lines
8.0 KiB
LLVM
193 lines
8.0 KiB
LLVM
; RUN: opt < %s -S -mcpu=z13 -passes=msan 2>&1 | FileCheck %s
|
|
; RUN: opt < %s -msan -S -mcpu=z13 | FileCheck %s
|
|
|
|
target datalayout = "E-m:e-i1:8:16-i8:8:16-i64:64-f128:64-a:8:16-n32:64"
|
|
target triple = "s390x-unknown-linux-gnu"
|
|
|
|
%struct.__va_list = type { i64, i64, i8*, i8* }
|
|
|
|
define i64 @foo(i64 %guard, ...) {
|
|
%vl = alloca %struct.__va_list, align 8
|
|
%1 = bitcast %struct.__va_list* %vl to i8*
|
|
call void @llvm.lifetime.start.p0i8(i64 32, i8* %1)
|
|
call void @llvm.va_start(i8* %1)
|
|
call void @llvm.va_end(i8* %1)
|
|
call void @llvm.lifetime.end.p0i8(i64 32, i8* %1)
|
|
ret i64 0
|
|
}
|
|
|
|
; First check if the variadic shadow values are saved in stack with correct
|
|
; size (which is 160 - size of the register save area).
|
|
|
|
; CHECK-LABEL: @foo
|
|
; CHECK: [[A:%.*]] = load {{.*}} @__msan_va_arg_overflow_size_tls
|
|
; CHECK: [[B:%.*]] = add i64 160, [[A]]
|
|
; CHECK: alloca {{.*}} [[B]]
|
|
|
|
; We expect two memcpy operations: one for the register save area, and one for
|
|
; the overflow arg area.
|
|
|
|
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 {{%.*}}, i8* align 8 {{%.*}}, i64 160, i1 false)
|
|
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 {{%.*}}, i8* align 8 {{%.*}}, i64 [[A]], i1 false)
|
|
|
|
declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
|
|
declare void @llvm.va_start(i8*) #2
|
|
declare void @llvm.va_end(i8*) #2
|
|
declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
|
|
|
|
declare i32 @random_i32()
|
|
declare i64 @random_i64()
|
|
declare float @random_float()
|
|
declare double @random_double()
|
|
|
|
define i64 @bar() {
|
|
%arg2 = call i32 () @random_i32()
|
|
%arg3 = call float () @random_float()
|
|
%arg4 = call i32 () @random_i32()
|
|
%arg5 = call double () @random_double()
|
|
%arg6 = call i64 () @random_i64()
|
|
%arg9 = call i32 () @random_i32()
|
|
%arg11 = call float () @random_float()
|
|
%arg12 = call i32 () @random_i32()
|
|
%arg13 = call double () @random_double()
|
|
%arg14 = call i64 () @random_i64()
|
|
%1 = call i64 (i64, ...) @foo(i64 1, i32 zeroext %arg2, float %arg3,
|
|
i32 signext %arg4, double %arg5, i64 %arg6,
|
|
i64 7, double 8.0, i32 zeroext %arg9,
|
|
double 10.0, float %arg11, i32 signext %arg12,
|
|
double %arg13, i64 %arg14)
|
|
ret i64 %1
|
|
}
|
|
|
|
; Save the incoming shadow values from the varargs in the __msan_va_arg_tls
|
|
; array at the offsets equal to those defined by the ABI for the corresponding
|
|
; registers in the register save area, and for the corresponding overflow args
|
|
; in the overflow arg area:
|
|
; - r2@16 == i64 1 - skipped, because it's fixed
|
|
; - r3@24 == i32 zext %arg2 - shadow is zero-extended
|
|
; - f0@128 == float %arg3 - left-justified, shadow is 32-bit
|
|
; - r4@32 == i32 sext %arg4 - shadow is sign-extended
|
|
; - f2@136 == double %arg5 - straightforward
|
|
; - r5@40 == i64 %arg6 - straightforward
|
|
; - r6@48 == 7 - filler
|
|
; - f4@144 == 8.0 - filler
|
|
; - overflow@160 == i32 zext %arg9 - shadow is zero-extended
|
|
; - f6@152 == 10.0 - filler
|
|
; - overflow@(168 + 4) == float %arg11 - right-justified, shadow is 32-bit
|
|
; - overflow@176 == i32 sext %arg12 - shadow is sign-extended
|
|
; - overflow@184 == double %arg13 - straightforward
|
|
; - overflow@192 == i64 %arg14 - straightforward
|
|
; Overflow arg area size is 40.
|
|
|
|
; CHECK-LABEL: @bar
|
|
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 24
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 128
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 32
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 136
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 40
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 48
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 144
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 160
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 152
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 172
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 176
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 184
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 192
|
|
; CHECK: store {{.*}} 40, {{.*}} @__msan_va_arg_overflow_size_tls
|
|
|
|
; Test that MSan doesn't generate code overflowing __msan_va_arg_tls when too many arguments are
|
|
; passed to a variadic function.
|
|
|
|
define dso_local i64 @many_args() {
|
|
entry:
|
|
%ret = call i64 (i64, ...) @sum(i64 120,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1,
|
|
i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1, i64 1
|
|
)
|
|
ret i64 %ret
|
|
}
|
|
|
|
; If the size of __msan_va_arg_tls changes the second argument of `add` must also be changed.
|
|
; CHECK-LABEL: @many_args
|
|
; CHECK: i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 792)
|
|
; CHECK-NOT: i64 add (i64 ptrtoint ([100 x i64]* @__msan_va_arg_tls to i64), i64 800)
|
|
|
|
declare i64 @sum(i64 %n, ...)
|
|
|
|
; Test offset calculation for vector arguments.
|
|
; Regardless of whether or not fixed args overflow, we should copy a shadow
|
|
; for a single vector vararg to offset 160.
|
|
|
|
declare void @vr_no_overflow(<4 x float> %v24, <4 x float> %v26,
|
|
<4 x float> %v28, <4 x float> %v30,
|
|
<4 x float> %v25, <4 x float> %v27,
|
|
<4 x float> %v29, ...)
|
|
|
|
declare <4 x float> @vr_value()
|
|
|
|
define void @vr_no_overflow_caller() {
|
|
%1 = call <4 x float> () @vr_value()
|
|
call void (<4 x float>, <4 x float>, <4 x float>,
|
|
<4 x float>, <4 x float>, <4 x float>,
|
|
<4 x float>, ...) @vr_no_overflow(
|
|
<4 x float> %1, <4 x float> %1, <4 x float> %1, <4 x float> %1,
|
|
<4 x float> %1, <4 x float> %1, <4 x float> %1, <4 x float> %1)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: @vr_no_overflow_caller
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 160
|
|
; CHECK-NOT: store {{.*}} @__msan_va_arg_tls {{.*}}
|
|
; CHECK: store {{.*}} 16, {{.*}} @__msan_va_arg_overflow_size_tls
|
|
|
|
declare void @vr_overflow(<4 x float> %v24, <4 x float> %v26,
|
|
<4 x float> %v28, <4 x float> %v30,
|
|
<4 x float> %v25, <4 x float> %v27,
|
|
<4 x float> %v29, <4 x float> %v31,
|
|
<4 x float> %overflow, ...)
|
|
|
|
define void @vr_overflow_caller() {
|
|
%1 = call <4 x float> @vr_value()
|
|
call void (<4 x float>, <4 x float>, <4 x float>,
|
|
<4 x float>, <4 x float>, <4 x float>,
|
|
<4 x float>, <4 x float>, <4 x float>,
|
|
...) @vr_overflow(
|
|
<4 x float> %1, <4 x float> %1, <4 x float> %1, <4 x float> %1,
|
|
<4 x float> %1, <4 x float> %1, <4 x float> %1, <4 x float> %1,
|
|
<4 x float> %1, <4 x float> %1)
|
|
ret void
|
|
}
|
|
|
|
; CHECK-LABEL: @vr_overflow_caller
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 160
|
|
; CHECK-NOT: store {{.*}} @__msan_va_arg_tls {{.*}}
|
|
; CHECK: store {{.*}} 16, {{.*}} @__msan_va_arg_overflow_size_tls
|
|
|
|
; Test that i128 and fp128 are passed by reference.
|
|
|
|
declare i128 @random_i128()
|
|
declare fp128 @random_fp128()
|
|
|
|
define i64 @bar_128() {
|
|
%iarg = call i128 @random_i128()
|
|
%fparg = call fp128 @random_fp128()
|
|
%1 = call i64 (i64, ...) @foo(i64 1, i128 %iarg, fp128 %fparg)
|
|
ret i64 %1
|
|
}
|
|
|
|
; CHECK-LABEL: @bar_128
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 24
|
|
; CHECK: store {{.*}} @__msan_va_arg_tls {{.*}} 32
|
|
; CHECK: store {{.*}} 0, {{.*}} @__msan_va_arg_overflow_size_tls
|