1 ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
3 ; RUN: opt < %s -passes=instcombine -S | FileCheck %s
5 declare i32 @strcmp(ptr, ptr)
7 @s9 = constant [10 x i8] c"123456789\00"
10 ; Fold strcmp(C ? s3 : s5, s3) to C ? 0 : 1.
12 define i32 @fold_strcmp_s3_x_s4_s3(i1 %C) {
13 ; CHECK-LABEL: @fold_strcmp_s3_x_s4_s3(
14 ; CHECK-NEXT: [[PTR:%.*]] = select i1 [[C:%.*]], ptr getelementptr inbounds (i8, ptr @s9, i64 6), ptr getelementptr inbounds (i8, ptr @s9, i64 5)
15 ; CHECK-NEXT: [[CMP:%.*]] = call i32 @strcmp(ptr noundef nonnull dereferenceable(1) [[PTR]], ptr noundef nonnull dereferenceable(4) getelementptr inbounds (i8, ptr @s9, i64 6))
16 ; CHECK-NEXT: ret i32 [[CMP]]
19 %ps3 = getelementptr [10 x i8], ptr @s9, i64 0, i64 6
20 %ps4 = getelementptr [10 x i8], ptr @s9, i64 0, i64 5
22 %ptr = select i1 %C, ptr %ps3, ptr %ps4
23 %cmp = call i32 @strcmp(ptr %ptr, ptr %ps3)