1 ; RUN: opt -scalar-evolution -analyze < %s | FileCheck %s 2 ; 3 ; This checks if the min and max expressions are properly recognized by 4 ; ScalarEvolution even though they the ICmpInst and SelectInst have different 5 ; types. 6 ; 7 ; #define max(a, b) (a > b ? a : b) 8 ; #define min(a, b) (a < b ? a : b) 9 ; 10 ; void f(int *A, int N) { 11 ; for (int i = 0; i < N; i++) { 12 ; A[max(0, i - 3)] = A[min(N, i + 3)] * 2; 13 ; } 14 ; } 15 ; 16 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 17 18 define void @f(i32* %A, i32 %N) { 19 bb: 20 br label %bb1 21 22 bb1: ; preds = %bb2, %bb 23 %i.0 = phi i32 [ 0, %bb ], [ %tmp23, %bb2 ] 24 %i.0.1 = sext i32 %i.0 to i64 25 %tmp = icmp slt i32 %i.0, %N 26 br i1 %tmp, label %bb2, label %bb24 27 28 bb2: ; preds = %bb1 29 %tmp3 = add nuw nsw i32 %i.0, 3 30 %tmp4 = icmp slt i32 %tmp3, %N 31 %tmp5 = sext i32 %tmp3 to i64 32 %tmp6 = sext i32 %N to i64 33 %tmp9 = select i1 %tmp4, i64 %tmp5, i64 %tmp6 34 ; min(N, i+3) 35 ; CHECK: select i1 %tmp4, i64 %tmp5, i64 %tmp6 36 ; CHECK-NEXT: --> (-1 + (-1 * ((-1 + (-1 * (sext i32 {3,+,1}<nw><%bb1> to i64))) smax (-1 + (-1 * (sext i32 %N to i64)))))) 37 %tmp11 = getelementptr inbounds i32, i32* %A, i64 %tmp9 38 %tmp12 = load i32, i32* %tmp11, align 4 39 %tmp13 = shl nsw i32 %tmp12, 1 40 %tmp14 = icmp sge i32 3, %i.0 41 %tmp17 = add nsw i64 %i.0.1, -3 42 %tmp19 = select i1 %tmp14, i64 0, i64 %tmp17 43 ; max(0, i - 3) 44 ; CHECK: select i1 %tmp14, i64 0, i64 %tmp17 45 ; CHECK-NEXT: --> (-3 + (3 smax {0,+,1}<nuw><nsw><%bb1>)) 46 %tmp21 = getelementptr inbounds i32, i32* %A, i64 %tmp19 47 store i32 %tmp13, i32* %tmp21, align 4 48 %tmp23 = add nuw nsw i32 %i.0, 1 49 br label %bb1 50 51 bb24: ; preds = %bb1 52 ret void 53 } 54
