; NOTE: Assertions have been autogenerated by utils/update_test_checks.py ; RUN: opt -passes=instcombine -S < %s | FileCheck %s define void @test_bitcast_1(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_bitcast_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: call void @use(ptr [[PTR:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i8 0, ptr [[PTR]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: call void @use(ptr %ptr) br label %end b1: br label %end end: %p = phi ptr [ %ptr, %b0 ], [ %ptr, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_2(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_bitcast_2( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: call void @use(ptr [[PTR:%.*]]) ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i8 0, ptr [[PTR]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: br label %end b1: call void @use(ptr %ptr) br label %end end: %p = phi ptr [ %ptr, %b0 ], [ %ptr, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_3(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_bitcast_3( ; CHECK-NEXT: entry: ; CHECK-NEXT: [[LOAD_PTR:%.*]] = load ptr, ptr [[PTR:%.*]], align 8 ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: call void @use(ptr [[LOAD_PTR]]) ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i8 0, ptr [[LOAD_PTR]], align 1 ; CHECK-NEXT: ret void ; entry: %load.ptr = load ptr, ptr %ptr br i1 %c, label %b0, label %b1 b0: br label %end b1: call void @use(ptr %load.ptr) br label %end end: %p = phi ptr [ %load.ptr, %b0 ], [ %load.ptr, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_loads_in_different_bbs(i1 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_bitcast_loads_in_different_bbs( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: [[LOAD_PTR_0:%.*]] = load ptr, ptr [[PTR_0:%.*]], align 8 ; CHECK-NEXT: call void @use(ptr [[LOAD_PTR_0]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: [[LOAD_PTR_1:%.*]] = load ptr, ptr [[PTR_1:%.*]], align 8 ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[LOAD_PTR_0]], [[B0]] ], [ [[LOAD_PTR_1]], [[B1]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: %load.ptr.0 = load ptr, ptr %ptr.0 call void @use(ptr %load.ptr.0) br label %end b1: %load.ptr.1 = load ptr, ptr %ptr.1 br label %end end: %p = phi ptr [ %load.ptr.0, %b0 ], [ %load.ptr.1, %b1 ] store i8 0, ptr %p ret void } define void @test_gep_1(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_gep_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: call void @use.i32(ptr [[PTR:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i32 0, ptr [[PTR]], align 4 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: call void @use.i32(ptr %ptr) br label %end b1: br label %end end: %p = phi ptr [ %ptr, %b0 ], [ %ptr, %b1 ] store i32 0, ptr %p ret void } define void @test_bitcast_not_foldable(i1 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_bitcast_not_foldable( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: call void @use(ptr [[PTR_1:%.*]]) ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[PTR_0:%.*]], [[B0]] ], [ [[PTR_1]], [[B1]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: br label %end b1: call void @use(ptr %ptr.1) br label %end end: %p = phi ptr [ %ptr.0, %b0 ], [ %ptr.1, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_with_extra_use(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_bitcast_with_extra_use( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: call void @use(ptr [[PTR:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i8 0, ptr [[PTR]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: call void @use(ptr %ptr) br label %end b1: br label %end end: %p = phi ptr [ %ptr, %b0 ], [ %ptr, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_different_bases(i1 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_bitcast_different_bases( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: call void @use(ptr [[PTR_0:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[PTR_0]], [[B0]] ], [ [[PTR_1:%.*]], [[B1]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: call void @use(ptr %ptr.0) br label %end b1: br label %end end: %p = phi ptr [ %ptr.0, %b0 ], [ %ptr.1, %b1 ] store i8 0, ptr %p ret void } define void @test_bitcast_gep_chains(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_bitcast_gep_chains( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: call void @use(ptr [[PTR:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: call void @use.i32(ptr [[PTR]]) ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: store i8 0, ptr [[PTR]], align 1 ; CHECK-NEXT: ret void ; entry: br i1 %c, label %b0, label %b1 b0: call void @use(ptr %ptr) br label %end b1: call void @use.i32(ptr %ptr) br label %end end: %p = phi ptr [ %ptr, %b0 ], [ %ptr, %b1 ] store i8 0, ptr %p ret void } define void @test_4_incoming_values_different_bases_1(i32 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_4_incoming_values_different_bases_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: switch i32 [[C:%.*]], label [[END_2:%.*]] [ ; CHECK-NEXT: i32 0, label [[B0:%.*]] ; CHECK-NEXT: i32 1, label [[B1:%.*]] ; CHECK-NEXT: i32 2, label [[B2:%.*]] ; CHECK-NEXT: i32 3, label [[B3:%.*]] ; CHECK-NEXT: ] ; CHECK: b0: ; CHECK-NEXT: call void @use(ptr [[PTR_0:%.*]]) ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: b2: ; CHECK-NEXT: br label [[END]] ; CHECK: b3: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[PTR_0]], [[B0]] ], [ [[PTR_1:%.*]], [[B1]] ], [ [[PTR_0]], [[B2]] ], [ [[PTR_0]], [[B3]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; CHECK: end.2: ; CHECK-NEXT: ret void ; entry: switch i32 %c, label %end.2 [ i32 0, label %b0 i32 1, label %b1 i32 2, label %b2 i32 3, label %b3] b0: call void @use(ptr %ptr.0) br label %end b1: br label %end b2: br label %end b3: br label %end end: %p = phi ptr [ %ptr.0, %b0 ], [ %ptr.1, %b1 ], [ %ptr.0, %b2 ], [ %ptr.0, %b3] store i8 0, ptr %p ret void end.2: ret void } define void @test_4_incoming_values_different_bases_2(i32 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_4_incoming_values_different_bases_2( ; CHECK-NEXT: entry: ; CHECK-NEXT: switch i32 [[C:%.*]], label [[END_2:%.*]] [ ; CHECK-NEXT: i32 0, label [[B0:%.*]] ; CHECK-NEXT: i32 1, label [[B1:%.*]] ; CHECK-NEXT: i32 2, label [[B2:%.*]] ; CHECK-NEXT: i32 3, label [[B3:%.*]] ; CHECK-NEXT: ] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: call void @use(ptr [[PTR_0:%.*]]) ; CHECK-NEXT: br label [[END]] ; CHECK: b2: ; CHECK-NEXT: br label [[END]] ; CHECK: b3: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[PTR_1:%.*]], [[B0]] ], [ [[PTR_0]], [[B1]] ], [ [[PTR_0]], [[B2]] ], [ [[PTR_0]], [[B3]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; CHECK: end.2: ; CHECK-NEXT: ret void ; entry: switch i32 %c, label %end.2 [ i32 0, label %b0 i32 1, label %b1 i32 2, label %b2 i32 3, label %b3] b0: br label %end b1: call void @use(ptr %ptr.0) br label %end b2: br label %end b3: br label %end end: %p = phi ptr [ %ptr.1, %b0 ], [ %ptr.0, %b1 ], [ %ptr.0, %b2 ], [ %ptr.0, %b3] store i8 0, ptr %p ret void end.2: ret void } define void @test_4_incoming_values_different_bases_3(i32 %c, ptr %ptr.0, ptr %ptr.1) { ; CHECK-LABEL: @test_4_incoming_values_different_bases_3( ; CHECK-NEXT: entry: ; CHECK-NEXT: switch i32 [[C:%.*]], label [[END_2:%.*]] [ ; CHECK-NEXT: i32 0, label [[B0:%.*]] ; CHECK-NEXT: i32 1, label [[B1:%.*]] ; CHECK-NEXT: i32 2, label [[B2:%.*]] ; CHECK-NEXT: i32 3, label [[B3:%.*]] ; CHECK-NEXT: ] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: br label [[END]] ; CHECK: b2: ; CHECK-NEXT: call void @use(ptr [[PTR_0:%.*]]) ; CHECK-NEXT: br label [[END]] ; CHECK: b3: ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = phi ptr [ [[PTR_0]], [[B0]] ], [ [[PTR_0]], [[B1]] ], [ [[PTR_0]], [[B2]] ], [ [[PTR_1:%.*]], [[B3]] ] ; CHECK-NEXT: store i8 0, ptr [[P]], align 1 ; CHECK-NEXT: ret void ; CHECK: end.2: ; CHECK-NEXT: ret void ; entry: switch i32 %c, label %end.2 [ i32 0, label %b0 i32 1, label %b1 i32 2, label %b2 i32 3, label %b3] b0: br label %end b1: br label %end b2: call void @use(ptr %ptr.0) br label %end b3: br label %end end: %p = phi ptr [ %ptr.0, %b0 ], [ %ptr.0, %b1 ], [ %ptr.0, %b2 ], [ %ptr.1, %b3] store i8 0, ptr %p ret void end.2: ret void } define void @test_addrspacecast_1(i1 %c, ptr %ptr) { ; CHECK-LABEL: @test_addrspacecast_1( ; CHECK-NEXT: entry: ; CHECK-NEXT: br i1 [[C:%.*]], label [[B0:%.*]], label [[B1:%.*]] ; CHECK: b0: ; CHECK-NEXT: br label [[END:%.*]] ; CHECK: b1: ; CHECK-NEXT: [[CAST_1:%.*]] = addrspacecast ptr [[PTR:%.*]] to ptr addrspace(1) ; CHECK-NEXT: call void @use.i8.addrspace1(ptr addrspace(1) [[CAST_1]]) ; CHECK-NEXT: br label [[END]] ; CHECK: end: ; CHECK-NEXT: [[P:%.*]] = addrspacecast ptr [[PTR]] to ptr addrspace(1) ; CHECK-NEXT: store i8 0, ptr addrspace(1) [[P]], align 1 ; CHECK-NEXT: ret void ; entry: %cast.0 = addrspacecast ptr %ptr to ptr addrspace(1) %cast.1 = addrspacecast ptr %ptr to ptr addrspace(1) br i1 %c, label %b0, label %b1 b0: br label %end b1: call void @use.i8.addrspace1(ptr addrspace(1) %cast.1) br label %end end: %p = phi ptr addrspace(1) [ %cast.0, %b0 ], [ %cast.1, %b1 ] store i8 0, ptr addrspace(1) %p ret void } declare void @use(ptr) declare void @use.i32(ptr) declare void @use.i8.addrspace1(ptr addrspace(1))