| ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py | |
| ; RUN: llc -mtriple=x86_64-unknown-linux-gnu %s -o - | FileCheck %s | |
| @a = external dso_local local_unnamed_addr global i64, align 8 | |
| @c = external dso_local local_unnamed_addr global i64, align 8 | |
| @b = external dso_local local_unnamed_addr global i64, align 8 | |
| ; Should generate a 16-bit load | |
| define void @foo() { | |
| ; CHECK-LABEL: foo: | |
| ; CHECK: # %bb.0: # %entry | |
| ; CHECK-NEXT: movzwl a+{{.*}}(%rip), %eax | |
| ; CHECK-NEXT: movq %rax, {{.*}}(%rip) | |
| ; CHECK-NEXT: retq | |
| entry: | |
| %0 = load i64, i64* @a, align 8 | |
| %1 = load i64, i64* @c, align 8 | |
| %and = and i64 %1, -16384 | |
| %add = add nsw i64 %and, 4503359447364223024 | |
| %shr = lshr i64 %0, %add | |
| %conv1 = and i64 %shr, 4294967295 | |
| store i64 %conv1, i64* @b, align 8 | |
| ret void | |
| } |