third_party/llvm-7.0/llvm/test/Instrumentation/MemorySanitizer/Mips/vararg-mips64el.ll

; RUN: opt < %s -msan -S | FileCheck %s

target datalayout = "e-m:m-i8:8:32-i16:16:32-i64:64-n32:64-S128"
target triple = "mips64el--linux"

define i32 @foo(i32 %guard, ...) {
  %vl = alloca i8*, align 8
  %1 = bitcast i8** %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 i32 0
}

; First, check allocation of the save area.

; CHECK-LABEL: @foo
; CHECK: [[A:%.*]] = load {{.*}} @__msan_va_arg_overflow_size_tls
; CHECK: [[B:%.*]] = add i64 0, [[A]]
; CHECK: [[C:%.*]] = alloca {{.*}} [[B]]

; CHECK: [[STACK:%.*]] = bitcast {{.*}} @__msan_va_arg_tls to i8*
; CHECK: call void @llvm.memcpy.p0i8.p0i8.i64(i8* align 8 [[C]], i8* align 8 [[STACK]], i64 [[B]], 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

define i32 @bar() {
  %1 = call i32 (i32, ...) @foo(i32 0, i32 1, i64 2, double 3.000000e+00)
  ret i32 %1
}

; Save the incoming shadow value from the arguments in the __msan_va_arg_tls
; array.
; CHECK-LABEL: @bar
; CHECK: store i32 0, i32* bitcast ([100 x i64]* @__msan_va_arg_tls to i32*), 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 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