1; RUN: opt -scalar-evolution -analyze -enable-new-pm=0 < %s | FileCheck %s 2; RUN: opt "-passes=print<scalar-evolution>" -disable-output < %s 2>&1 | FileCheck %s 3; 4; This checks if the min and max expressions are properly recognized by 5; ScalarEvolution even though they the ICmpInst and SelectInst have different 6; types. 7; 8; #define max(a, b) (a > b ? a : b) 9; #define min(a, b) (a < b ? a : b) 10; 11; void f(int *A, int N) { 12; for (int i = 0; i < N; i++) { 13; A[max(0, i - 3)] = A[min(N, i + 3)] * 2; 14; } 15; } 16; 17target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" 18 19define void @f(i32* %A, i32 %N) { 20bb: 21 br label %bb1 22 23bb1: ; preds = %bb2, %bb 24 %i.0 = phi i32 [ 0, %bb ], [ %tmp23, %bb2 ] 25 %i.0.1 = sext i32 %i.0 to i64 26 %tmp = icmp slt i32 %i.0, %N 27 br i1 %tmp, label %bb2, label %bb24 28 29bb2: ; preds = %bb1 30 %tmp3 = add nuw nsw i32 %i.0, 3 31 %tmp4 = icmp slt i32 %tmp3, %N 32 %tmp5 = sext i32 %tmp3 to i64 33 %tmp6 = sext i32 %N to i64 34 %tmp9 = select i1 %tmp4, i64 %tmp5, i64 %tmp6 35; min(N, i+3) 36; CHECK: select i1 %tmp4, i64 %tmp5, i64 %tmp6 37; CHECK-NEXT: --> ((sext i32 {3,+,1}<nuw><%bb1> to i64) smin (sext i32 %N to i64)) 38 %tmp11 = getelementptr inbounds i32, i32* %A, i64 %tmp9 39 %tmp12 = load i32, i32* %tmp11, align 4 40 %tmp13 = shl nsw i32 %tmp12, 1 41 %tmp14 = icmp sge i32 3, %i.0 42 %tmp17 = add nsw i64 %i.0.1, -3 43 %tmp19 = select i1 %tmp14, i64 0, i64 %tmp17 44; max(0, i - 3) 45; CHECK: select i1 %tmp14, i64 0, i64 %tmp17 46; CHECK-NEXT: --> (-3 + (3 smax {0,+,1}<nuw><nsw><%bb1>)) 47 %tmp21 = getelementptr inbounds i32, i32* %A, i64 %tmp19 48 store i32 %tmp13, i32* %tmp21, align 4 49 %tmp23 = add nuw nsw i32 %i.0, 1 50 br label %bb1 51 52bb24: ; preds = %bb1 53 ret void 54} 55