1 ; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s 2 ; RUN: opt < %s -msan -msan-check-access-address=1 -S | FileCheck %s --check-prefix=ADDR 3 ; REQUIRES: x86-registered-target 4 5 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" 6 target triple = "x86_64-unknown-linux-gnu" 7 8 declare void @llvm.x86.sse.stmxcsr(i8*) 9 declare void @llvm.x86.sse.ldmxcsr(i8*) 10 11 define void @getcsr(i32 *%p) sanitize_memory { 12 entry: 13 %0 = bitcast i32* %p to i8* 14 call void @llvm.x86.sse.stmxcsr(i8* %0) 15 ret void 16 } 17 18 ; CHECK-LABEL: @getcsr( 19 ; CHECK: store i32 0, i32* 20 ; CHECK: call void @llvm.x86.sse.stmxcsr( 21 ; CHECK: ret void 22 23 ; ADDR-LABEL: @getcsr( 24 ; ADDR: %[[A:.*]] = load i64, i64* getelementptr inbounds {{.*}} @__msan_param_tls, i32 0, i32 0), align 8 25 ; ADDR: %[[B:.*]] = icmp ne i64 %[[A]], 0 26 ; ADDR: br i1 %[[B]], label {{.*}}, label 27 ; ADDR: call void @__msan_warning_noreturn() 28 ; ADDR: call void @llvm.x86.sse.stmxcsr( 29 ; ADDR: ret void 30 31 ; Function Attrs: nounwind uwtable 32 define void @setcsr(i32 *%p) sanitize_memory { 33 entry: 34 %0 = bitcast i32* %p to i8* 35 call void @llvm.x86.sse.ldmxcsr(i8* %0) 36 ret void 37 } 38 39 ; CHECK-LABEL: @setcsr( 40 ; CHECK: %[[A:.*]] = load i32, i32* %{{.*}}, align 1 41 ; CHECK: %[[B:.*]] = icmp ne i32 %[[A]], 0 42 ; CHECK: br i1 %[[B]], label {{.*}}, label 43 ; CHECK: call void @__msan_warning_noreturn() 44 ; CHECK: call void @llvm.x86.sse.ldmxcsr( 45 ; CHECK: ret void 46 47 ; ADDR-LABEL: @setcsr( 48 ; ADDR: %[[A:.*]] = load i64, i64* getelementptr inbounds {{.*}} @__msan_param_tls, i32 0, i32 0), align 8 49 ; ADDR: %[[B:.*]] = icmp ne i64 %[[A]], 0 50 ; ADDR: br i1 %[[B]], label {{.*}}, label 51 ; ADDR: call void @__msan_warning_noreturn() 52 ; ADDR: call void @llvm.x86.sse.ldmxcsr( 53 ; ADDR: ret void 54
