1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2 2; RUN: opt -S < %s -passes=instcombine | FileCheck %s 3 4target datalayout = "e-p1:16:16-p2:32:32-p3:64:64" 5 6@G1 = global i32 42, align 1 7@G2 = global i32 42 8@G3 = global [4 x i8] zeroinitializer, align 1 9 10@A1 = alias i32, getelementptr inbounds ([4 x i8], ptr @G3, i32 0, i32 2) 11 12define i64 @f1() { 13; This cannot be constant folded because G1 is underaligned. 14; CHECK-LABEL: define i64 @f1() { 15; CHECK-NEXT: [[AND:%.*]] = and i64 ptrtoint (ptr @G1 to i64), 1 16; CHECK-NEXT: ret i64 [[AND]] 17; 18 %and = and i64 ptrtoint (ptr @G1 to i64), 1 19 ret i64 %and 20} 21 22define i64 @f2() { 23; The preferred alignment for G2 allows this one to foled to zero. 24; CHECK-LABEL: define i64 @f2() { 25; CHECK-NEXT: ret i64 0 26; 27 %and = and i64 ptrtoint (ptr @G2 to i64), 1 28 ret i64 %and 29} 30 31define i64 @g1() { 32; This cannot be constant folded because A1 aliases G3 which is underalaigned. 33; CHECK-LABEL: define i64 @g1() { 34; CHECK-NEXT: [[AND:%.*]] = and i64 ptrtoint (ptr @A1 to i64), 1 35; CHECK-NEXT: ret i64 [[AND]] 36; 37 %and = and i64 ptrtoint (ptr @A1 to i64), 1 38 ret i64 %and 39} 40