| ; RUN: opt < %s -correlated-propagation -S | FileCheck %s |
| |
| define void @test1(i8* %ptr) { |
| ; CHECK: test1 |
| %A = load i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| define void @test2(i8* %ptr) { |
| ; CHECK: test2 |
| store i8 0, i8* %ptr |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| define void @test3() { |
| ; CHECK: test3 |
| %ptr = alloca i8 |
| br label %bb |
| bb: |
| icmp ne i8* %ptr, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) |
| define void @test4(i8* %dest, i8* %src) { |
| ; CHECK: test4 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| declare void @llvm.memmove.p0i8.p0i8.i32(i8*, i8*, i32, i32, i1) |
| define void @test5(i8* %dest, i8* %src) { |
| ; CHECK: test5 |
| call void @llvm.memmove.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| icmp ne i8* %src, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| declare void @llvm.memset.p0i8.i32(i8*, i8, i32, i32, i1) |
| define void @test6(i8* %dest) { |
| ; CHECK: test6 |
| call void @llvm.memset.p0i8.i32(i8* %dest, i8 255, i32 1, i32 1, i1 false) |
| br label %bb |
| bb: |
| icmp ne i8* %dest, null |
| ; CHECK-NOT: icmp |
| ret void |
| } |
| |
| define void @test7(i8* %dest, i8* %src, i32 %len) { |
| ; CHECK: test7 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 %len, i32 1, i1 false) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8* %dest, null |
| ; CHECK: KEEP1 |
| %KEEP2 = icmp ne i8* %src, null |
| ; CHECK: KEEP2 |
| ret void |
| } |
| |
| declare void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) *, i8 addrspace(1) *, i32, i32, i1) |
| define void @test8(i8 addrspace(1) * %dest, i8 addrspace(1) * %src) { |
| ; CHECK: test8 |
| call void @llvm.memcpy.p1i8.p1i8.i32(i8 addrspace(1) * %dest, i8 addrspace(1) * %src, i32 1, i32 1, i1 false) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8 addrspace(1) * %dest, null |
| ; CHECK: KEEP1 |
| %KEEP2 = icmp ne i8 addrspace(1) * %src, null |
| ; CHECK: KEEP2 |
| ret void |
| } |
| |
| define void @test9(i8* %dest, i8* %src) { |
| ; CHECK: test9 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %dest, i8* %src, i32 1, i32 1, i1 true) |
| br label %bb |
| bb: |
| %KEEP1 = icmp ne i8* %dest, null |
| ; CHECK: KEEP1 |
| %KEEP2 = icmp ne i8* %src, null |
| ; CHECK: KEEP2 |
| ret void |
| } |