| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt < %s -basic-aa -memcpyopt -S -enable-memcpyopt-memoryssa=0 | FileCheck %s |
| ; RUN: opt < %s -basic-aa -memcpyopt -S -enable-memcpyopt-memoryssa=1 -verify-memoryssa | FileCheck %s |
| target datalayout = "E-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64" |
| |
| %a = type { i32 } |
| %b = type { float } |
| |
| declare void @g(%a* nocapture) |
| |
| define float @f() { |
| ; CHECK-LABEL: @f( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[A_VAR:%.*]] = alloca [[A:%.*]], align 8 |
| ; CHECK-NEXT: [[B_VAR:%.*]] = alloca [[B:%.*]], align 8 |
| ; CHECK-NEXT: [[B_VAR1:%.*]] = bitcast %b* [[B_VAR]] to %a* |
| ; CHECK-NEXT: call void @g(%a* [[B_VAR1]]) |
| ; CHECK-NEXT: [[A_I8:%.*]] = bitcast %a* [[A_VAR]] to i8* |
| ; CHECK-NEXT: [[B_I8:%.*]] = bitcast %b* [[B_VAR]] to i8* |
| ; CHECK-NEXT: [[TMP1:%.*]] = getelementptr [[B]], %b* [[B_VAR]], i32 0, i32 0 |
| ; CHECK-NEXT: [[TMP2:%.*]] = load float, float* [[TMP1]], align 4 |
| ; CHECK-NEXT: ret float [[TMP2]] |
| ; |
| entry: |
| %a_var = alloca %a |
| %b_var = alloca %b, align 1 |
| call void @g(%a* %a_var) |
| %a_i8 = bitcast %a* %a_var to i8* |
| %b_i8 = bitcast %b* %b_var to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %b_i8, i8* %a_i8, i32 4, i1 false) |
| %tmp1 = getelementptr %b, %b* %b_var, i32 0, i32 0 |
| %tmp2 = load float, float* %tmp1 |
| ret float %tmp2 |
| } |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i1) nounwind |
