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