22 lines · plain
1; RUN: opt < %s -passes=gvn -S | FileCheck %s2; PR19963 4%struct.anon = type { i32, i8, i8, i8, i8 }5 6define i32 @a() {7entry:8 %c = alloca %struct.anon ; <ptr> [#uses=2]9 %tmp = getelementptr %struct.anon, ptr %c, i32 0, i32 0 ; <ptr> [#uses=1]10 %tmp1 = getelementptr i32, ptr %tmp, i32 1 ; <ptr> [#uses=2]11 %tmp2 = load i32, ptr %tmp1, align 4 ; <i32> [#uses=1]12; CHECK-NOT: load13 %tmp3 = or i32 %tmp2, 11 ; <i32> [#uses=1]14 %tmp4 = and i32 %tmp3, -21 ; <i32> [#uses=1]15 store i32 %tmp4, ptr %tmp1, align 416 %call = call i32 (...) @x( ptr %c ) ; <i32> [#uses=0]17 ret i32 undef18}19 20 21declare i32 @x(...)22