1; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck \ 2; RUN: %s 3; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s 4 5target 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" 6target triple = "x86_64-unknown-linux-gnu" 7 8; Check instrumentation mul when one of the operands is a constant. 9 10define i64 @MulConst(i64 %x) sanitize_memory { 11entry: 12 %y = mul i64 %x, 42949672960000 13 ret i64 %y 14} 15 16; 42949672960000 = 2**32 * 10000 17; 36 trailing zero bits 18; 68719476736 = 2**36 19 20; CHECK-LABEL: @MulConst( 21; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 22; CHECK: [[B:%.*]] = mul i64 [[A]], 68719476736 23; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 24 25 26define i64 @MulZero(i64 %x) sanitize_memory { 27entry: 28 %y = mul i64 %x, 0 29 ret i64 %y 30} 31 32; CHECK-LABEL: @MulZero( 33; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 34; CHECK: [[B:%.*]] = mul i64 [[A]], 0{{$}} 35; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 36 37 38define i64 @MulNeg(i64 %x) sanitize_memory { 39entry: 40 %y = mul i64 %x, -16 41 ret i64 %y 42} 43 44; CHECK-LABEL: @MulNeg( 45; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 46; CHECK: [[B:%.*]] = mul i64 [[A]], 16 47; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 48 49 50define i64 @MulNeg2(i64 %x) sanitize_memory { 51entry: 52 %y = mul i64 %x, -48 53 ret i64 %y 54} 55 56; CHECK-LABEL: @MulNeg2( 57; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 58; CHECK: [[B:%.*]] = mul i64 [[A]], 16 59; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 60 61 62define i64 @MulOdd(i64 %x) sanitize_memory { 63entry: 64 %y = mul i64 %x, 12345 65 ret i64 %y 66} 67 68; CHECK-LABEL: @MulOdd( 69; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 70; CHECK: [[B:%.*]] = mul i64 [[A]], 1 71; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 72 73 74define i64 @MulLarge(i64 %x) sanitize_memory { 75entry: 76 %y = mul i64 %x, -9223372036854775808 77 ret i64 %y 78} 79 80; -9223372036854775808 = 0x7000000000000000 81 82; CHECK-LABEL: @MulLarge( 83; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 84; CHECK: [[B:%.*]] = mul i64 [[A]], -9223372036854775808 85; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls 86 87define <4 x i32> @MulVectorConst(<4 x i32> %x) sanitize_memory { 88entry: 89 %y = mul <4 x i32> %x, <i32 3072, i32 0, i32 -16, i32 -48> 90 ret <4 x i32> %y 91} 92 93; CHECK-LABEL: @MulVectorConst( 94; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 95; CHECK: [[B:%.*]] = mul <4 x i32> [[A]], <i32 1024, i32 0, i32 16, i32 16> 96; CHECK: store <4 x i32> [[B]], <4 x i32>* {{.*}} @__msan_retval_tls 97 98 99; The constant in multiplication does not have to be a literal integer constant. 100@X = linkonce_odr global i8* null 101define i64 @MulNonIntegerConst(i64 %a) sanitize_memory { 102 %mul = mul i64 %a, ptrtoint (i8** @X to i64) 103 ret i64 %mul 104} 105 106; CHECK-LABEL: @MulNonIntegerConst( 107; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 108; CHECK: [[B:%.*]] = mul i64 [[A]], 1 109; CHECK: store i64 [[B]], {{.*}}@__msan_retval_tls 110 111define <2 x i64> @MulNonIntegerVectorConst(<2 x i64> %a) sanitize_memory { 112 %mul = mul <2 x i64> %a, <i64 3072, i64 ptrtoint (i8** @X to i64)> 113 ret <2 x i64> %mul 114} 115 116; CHECK-LABEL: @MulNonIntegerVectorConst( 117; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls 118; CHECK: [[B:%.*]] = mul <2 x i64> [[A]], <i64 1024, i64 1> 119; CHECK: store <2 x i64> [[B]], {{.*}}@__msan_retval_tls 120