diff options
Diffstat (limited to 'test/Instrumentation/MemorySanitizer/mul_by_constant.ll')
-rw-r--r-- | test/Instrumentation/MemorySanitizer/mul_by_constant.ll | 94 |
1 files changed, 94 insertions, 0 deletions
diff --git a/test/Instrumentation/MemorySanitizer/mul_by_constant.ll b/test/Instrumentation/MemorySanitizer/mul_by_constant.ll new file mode 100644 index 0000000..e068f69 --- /dev/null +++ b/test/Instrumentation/MemorySanitizer/mul_by_constant.ll @@ -0,0 +1,94 @@ +; RUN: opt < %s -msan -msan-check-access-address=0 -S | FileCheck %s + +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" +target triple = "x86_64-unknown-linux-gnu" + +; Check instrumentation mul when one of the operands is a constant. + +define i64 @MulConst(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, 42949672960000 + ret i64 %y +} + +; 42949672960000 = 2**32 * 10000 +; 36 trailing zero bits +; 68719476736 = 2**36 + +; CHECK-LABEL: @MulConst( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], 68719476736 +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + + +define i64 @MulZero(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, 0 + ret i64 %y +} + +; CHECK-LABEL: @MulZero( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], 0{{$}} +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + + +define i64 @MulNeg(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, -16 + ret i64 %y +} + +; CHECK-LABEL: @MulNeg( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], 16 +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + + +define i64 @MulNeg2(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, -48 + ret i64 %y +} + +; CHECK-LABEL: @MulNeg2( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], 16 +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + + +define i64 @MulOdd(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, 12345 + ret i64 %y +} + +; CHECK-LABEL: @MulOdd( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], 1 +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + + +define i64 @MulLarge(i64 %x) sanitize_memory { +entry: + %y = mul i64 %x, -9223372036854775808 + ret i64 %y +} + +; -9223372036854775808 = 0x7000000000000000 + +; CHECK-LABEL: @MulLarge( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul i64 [[A]], -9223372036854775808 +; CHECK: store i64 [[B]], i64* {{.*}} @__msan_retval_tls + +define <4 x i32> @MulVectorConst(<4 x i32> %x) sanitize_memory { +entry: + %y = mul <4 x i32> %x, <i32 3072, i32 0, i32 -16, i32 -48> + ret <4 x i32> %y +} + +; CHECK-LABEL: @MulVectorConst( +; CHECK: [[A:%.*]] = load {{.*}} @__msan_param_tls +; CHECK: [[B:%.*]] = mul <4 x i32> [[A]], <i32 1024, i32 0, i32 16, i32 16> +; CHECK: store <4 x i32> [[B]], <4 x i32>* {{.*}} @__msan_retval_tls |