| ; RUN: opt -passes=gvn -S < %s | FileCheck %s |
| |
| define i32 @test1(ptr %p, ptr %q) { |
| ; CHECK-LABEL: @test1(ptr %p, ptr %q) |
| ; CHECK: load i32, ptr %p |
| ; CHECK-NOT: noalias |
| ; CHECK: %c = add i32 %a, %a |
| %a = load i32, ptr %p, !noalias !3 |
| %b = load i32, ptr %p |
| %c = add i32 %a, %b |
| ret i32 %c |
| } |
| |
| define i32 @test2(ptr %p, ptr %q) { |
| ; CHECK-LABEL: @test2(ptr %p, ptr %q) |
| ; CHECK: load i32, ptr %p, align 4, !alias.scope ![[SCOPE1:[0-9]+]] |
| ; CHECK: %c = add i32 %a, %a |
| %a = load i32, ptr %p, !alias.scope !3 |
| %b = load i32, ptr %p, !alias.scope !3 |
| %c = add i32 %a, %b |
| ret i32 %c |
| } |
| |
| define i32 @test3(ptr %p, ptr %q) { |
| ; CHECK-LABEL: @test3(ptr %p, ptr %q) |
| ; CHECK: load i32, ptr %p, align 4, !alias.scope ![[SCOPE2:[0-9]+]] |
| ; CHECK: %c = add i32 %a, %a |
| %a = load i32, ptr %p, !alias.scope !4 |
| %b = load i32, ptr %p, !alias.scope !5 |
| %c = add i32 %a, %b |
| ret i32 %c |
| } |
| |
| ; CHECK: ![[SCOPE1]] = !{!{{[0-9]+}}} |
| ; CHECK: ![[SCOPE2]] = !{!{{[0-9]+}}, !{{[0-9]+}}} |
| declare i32 @foo(ptr) readonly |
| |
| !0 = distinct !{!0, !2, !"callee0: %a"} |
| !1 = distinct !{!1, !2, !"callee0: %b"} |
| !2 = distinct !{!2, !"callee0"} |
| |
| !3 = !{!0} |
| !4 = !{!1} |
| !5 = !{!0, !1} |