1 // RUN: %clang_cc1 -x cl -O1 -emit-llvm %s -o - -triple x86_64-linux-gnu | FileCheck %s 2 // OpenCL essentially reduces all shift amounts to the last word-size bits before evaluating. 3 // Test this both for variables and constants evaluated in the front-end. 4 5 6 //CHECK: @positiveShift32 7 int positiveShift32(int a,int b) { 8 //CHECK: [[M32:%.+]] = and i32 %b, 31 9 //CHECK-NEXT: [[C32:%.+]] = shl i32 %a, [[M32]] 10 int c = a<<b; 11 int d = ((int)1)<<33; 12 //CHECK-NEXT: [[E32:%.+]] = add nsw i32 [[C32]], 2 13 int e = c + d; 14 //CHECK-NEXT: ret i32 [[E32]] 15 return e; 16 } 17 18 //CHECK: @positiveShift64 19 long positiveShift64(long a,long b) { 20 //CHECK: [[M64:%.+]] = and i64 %b, 63 21 //CHECK-NEXT: [[C64:%.+]] = ashr i64 %a, [[M64]] 22 long c = a>>b; 23 long d = ((long)8)>>65; 24 //CHECK-NEXT: [[E64:%.+]] = add nsw i64 [[C64]], 4 25 long e = c + d; 26 //CHECK-NEXT: ret i64 [[E64]] 27 return e; 28 } 29 30 typedef __attribute__((ext_vector_type(4))) int int4; 31 32 //CHECK: @vectorVectorTest 33 int4 vectorVectorTest(int4 a,int4 b) { 34 //CHECK: [[VM:%.+]] = and <4 x i32> %b, <i32 31, i32 31, i32 31, i32 31> 35 //CHECK-NEXT: [[VC:%.+]] = shl <4 x i32> %a, [[VM]] 36 int4 c = a << b; 37 //CHECK-NEXT: [[VF:%.+]] = add <4 x i32> [[VC]], <i32 2, i32 4, i32 16, i32 8> 38 int4 d = {1, 1, 1, 1}; 39 int4 e = {33, 34, -28, -29}; 40 int4 f = c + (d << e); 41 //CHECK-NEXT: ret <4 x i32> [[VF]] 42 return f; 43 } 44 45 //CHECK: @vectorScalarTest 46 int4 vectorScalarTest(int4 a,int b) { 47 //CHECK: [[SP0:%.+]] = insertelement <4 x i32> undef, i32 %b, i32 0 48 //CHECK: [[SP1:%.+]] = shufflevector <4 x i32> [[SP0]], <4 x i32> undef, <4 x i32> zeroinitializer 49 //CHECK: [[VSM:%.+]] = and <4 x i32> [[SP1]], <i32 31, i32 31, i32 31, i32 31> 50 //CHECK-NEXT: [[VSC:%.+]] = shl <4 x i32> %a, [[VSM]] 51 int4 c = a << b; 52 //CHECK-NEXT: [[VSF:%.+]] = add <4 x i32> [[VSC]], <i32 4, i32 4, i32 4, i32 4> 53 int4 d = {1, 1, 1, 1}; 54 int4 f = c + (d << 34); 55 //CHECK-NEXT: ret <4 x i32> [[VSF]] 56 return f; 57 } 58
