| ; RUN: opt < %s -data-layout="e-p:32:32:32-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-n8:16:32" -passes=newgvn,dce -S | FileCheck %s |
| ; RUN: opt < %s -data-layout="E-p:32:32:32-p1:16:16:16-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:64:64-n32" -passes=newgvn,dce -S | FileCheck %s |
| ; memset -> i16 forwarding. |
| define signext i16 @memset_to_i16_local(ptr %A) nounwind ssp { |
| entry: |
| tail call void @llvm.memset.p0.i64(ptr %A, i8 1, i64 200, i1 false) |
| %arrayidx = getelementptr inbounds i16, ptr %A, i64 42 |
| %tmp2 = load i16, ptr %arrayidx |
| ret i16 %tmp2 |
| ; CHECK-LABEL: @memset_to_i16_local( |
| ; CHECK-NOT: load |
| ; CHECK: ret i16 257 |
| } |
| |
| @GCst = constant {i32, float, i32 } { i32 42, float 14., i32 97 } |
| @GCst_as1 = addrspace(1) constant {i32, float, i32 } { i32 42, float 14., i32 97 } |
| |
| ; memset -> float forwarding. |
| define float @memcpy_to_float_local(ptr %A) nounwind ssp { |
| entry: |
| tail call void @llvm.memcpy.p0.p0.i64(ptr %A, ptr @GCst, i64 12, i1 false) |
| %arrayidx = getelementptr inbounds float, ptr %A, i64 1 ; <ptr> [#uses=1] |
| %tmp2 = load float, ptr %arrayidx ; <float> [#uses=1] |
| ret float %tmp2 |
| ; CHECK-LABEL: @memcpy_to_float_local( |
| ; CHECK-NOT: load |
| ; CHECK: ret float 1.400000e+01 |
| } |
| ; memcpy from address space 1 |
| define float @memcpy_to_float_local_as1(ptr %A) nounwind ssp { |
| entry: |
| tail call void @llvm.memcpy.p0.p1.i64(ptr %A, ptr addrspace(1) @GCst_as1, i64 12, i1 false) |
| %arrayidx = getelementptr inbounds float, ptr %A, i64 1 ; <ptr> [#uses=1] |
| %tmp2 = load float, ptr %arrayidx ; <float> [#uses=1] |
| ret float %tmp2 |
| ; CHECK-LABEL: @memcpy_to_float_local_as1( |
| ; CHECK-NOT: load |
| ; CHECK: ret float 1.400000e+01 |
| } |
| |
| ; PR6642 |
| define i32 @memset_to_load() nounwind readnone { |
| entry: |
| %x = alloca [256 x i32], align 4 ; <ptr> [#uses=2] |
| call void @llvm.memset.p0.i64(ptr align 4 %x, i8 0, i64 1024, i1 false) |
| %arraydecay = getelementptr inbounds [256 x i32], ptr %x, i32 0, i32 0 ; <ptr> |
| %tmp1 = load i32, ptr %arraydecay ; <i32> [#uses=1] |
| ret i32 %tmp1 |
| ; CHECK-LABEL: @memset_to_load( |
| ; CHECK: ret i32 0 |
| } |
| declare void @llvm.memset.p0.i64(ptr nocapture, i8, i64, i1) nounwind |
| |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture, ptr nocapture, i64, i1) nounwind |
| declare void @llvm.memcpy.p0.p1.i64(ptr nocapture, ptr addrspace(1) nocapture, i64, i1) nounwind |