| ; RUN: opt < %s -sroa -S | FileCheck %s |
| ; RUN: opt -debugify -sroa -S < %s | FileCheck %s -check-prefix DEBUGLOC |
| |
| 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-n8:16:32:64" |
| |
| declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1) |
| |
| define void @test1({ i8, i8 }* %a, { i8, i8 }* %b) { |
| ; CHECK-LABEL: @test1( |
| ; CHECK: %[[gep_a0:.*]] = getelementptr inbounds { i8, i8 }, { i8, i8 }* %a, i64 0, i32 0 |
| ; CHECK: %[[a0:.*]] = load i8, i8* %[[gep_a0]], align 16 |
| ; CHECK: %[[gep_a1:.*]] = getelementptr inbounds { i8, i8 }, { i8, i8 }* %a, i64 0, i32 1 |
| ; CHECK: %[[a1:.*]] = load i8, i8* %[[gep_a1]], align 1 |
| ; CHECK: %[[gep_b0:.*]] = getelementptr inbounds { i8, i8 }, { i8, i8 }* %b, i64 0, i32 0 |
| ; CHECK: store i8 %[[a0]], i8* %[[gep_b0]], align 16 |
| ; CHECK: %[[gep_b1:.*]] = getelementptr inbounds { i8, i8 }, { i8, i8 }* %b, i64 0, i32 1 |
| ; CHECK: store i8 %[[a1]], i8* %[[gep_b1]], align 1 |
| ; CHECK: ret void |
| |
| entry: |
| %alloca = alloca { i8, i8 }, align 16 |
| %gep_a = getelementptr { i8, i8 }, { i8, i8 }* %a, i32 0, i32 0 |
| %gep_alloca = getelementptr { i8, i8 }, { i8, i8 }* %alloca, i32 0, i32 0 |
| %gep_b = getelementptr { i8, i8 }, { i8, i8 }* %b, i32 0, i32 0 |
| |
| store i8 420, i8* %gep_alloca, align 16 |
| |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 16 %gep_alloca, i8* align 16 %gep_a, i32 2, i1 false) |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 16 %gep_b, i8* align 16 %gep_alloca, i32 2, i1 false) |
| ret void |
| } |
| |
| define void @test2() { |
| ; CHECK-LABEL: @test2( |
| ; CHECK: alloca i16 |
| ; CHECK: load i8, i8* %{{.*}} |
| ; CHECK: store i8 42, i8* %{{.*}} |
| ; CHECK: ret void |
| |
| ; Check that when sroa rewrites the alloca partition |
| ; it preserves the original DebugLocation. |
| ; DEBUGLOC-LABEL: @test2( |
| ; DEBUGLOC: {{.*}} = alloca {{.*}} !dbg ![[DbgLoc:[0-9]+]] |
| ; |
| ; DEBUGLOC: ![[DbgLoc]] = !DILocation( |
| |
| entry: |
| %a = alloca { i8, i8, i8, i8 }, align 2 |
| %gep1 = getelementptr { i8, i8, i8, i8 }, { i8, i8, i8, i8 }* %a, i32 0, i32 1 |
| %cast1 = bitcast i8* %gep1 to i16* |
| store volatile i16 0, i16* %cast1 |
| %gep2 = getelementptr { i8, i8, i8, i8 }, { i8, i8, i8, i8 }* %a, i32 0, i32 2 |
| %result = load i8, i8* %gep2 |
| store i8 42, i8* %gep2 |
| ret void |
| } |
| |
| define void @PR13920(<2 x i64>* %a, i16* %b) { |
| ; Test that alignments on memcpy intrinsics get propagated to loads and stores. |
| ; CHECK-LABEL: @PR13920( |
| ; CHECK: load <2 x i64>, <2 x i64>* %a, align 2 |
| ; CHECK: store <2 x i64> {{.*}}, <2 x i64>* {{.*}}, align 2 |
| ; CHECK: ret void |
| |
| entry: |
| %aa = alloca <2 x i64>, align 16 |
| %aptr = bitcast <2 x i64>* %a to i8* |
| %aaptr = bitcast <2 x i64>* %aa to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %aaptr, i8* align 2 %aptr, i32 16, i1 false) |
| %bptr = bitcast i16* %b to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %bptr, i8* align 2 %aaptr, i32 16, i1 false) |
| ret void |
| } |
| |
| define void @test3(i8* %x) { |
| ; Test that when we promote an alloca to a type with lower ABI alignment, we |
| ; provide the needed explicit alignment that code using the alloca may be |
| ; expecting. However, also check that any offset within an alloca can in turn |
| ; reduce the alignment. |
| ; CHECK-LABEL: @test3( |
| ; CHECK: alloca [22 x i8], align 8 |
| ; CHECK: alloca [18 x i8], align 2 |
| ; CHECK: ret void |
| |
| entry: |
| %a = alloca { i8*, i8*, i8* } |
| %b = alloca { i8*, i8*, i8* } |
| %a_raw = bitcast { i8*, i8*, i8* }* %a to i8* |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 8 %a_raw, i8* align 8 %x, i32 22, i1 false) |
| %b_raw = bitcast { i8*, i8*, i8* }* %b to i8* |
| %b_gep = getelementptr i8, i8* %b_raw, i32 6 |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 2 %b_gep, i8* align 2 %x, i32 18, i1 false) |
| ret void |
| } |
| |
| define void @test5() { |
| ; Test that we preserve underaligned loads and stores when splitting. The use |
| ; of volatile in this test case is just to force the loads and stores to not be |
| ; split or promoted out of existence. |
| ; |
| ; CHECK-LABEL: @test5( |
| ; CHECK: alloca [9 x i8] |
| ; CHECK: alloca [9 x i8] |
| ; CHECK: store volatile double 0.0{{.*}}, double* %{{.*}}, align 1 |
| ; CHECK: load volatile i16, i16* %{{.*}}, align 1 |
| ; CHECK: load double, double* %{{.*}}, align 1 |
| ; CHECK: store volatile double %{{.*}}, double* %{{.*}}, align 1 |
| ; CHECK: load volatile i16, i16* %{{.*}}, align 1 |
| ; CHECK: ret void |
| |
| entry: |
| %a = alloca [18 x i8] |
| %raw1 = getelementptr inbounds [18 x i8], [18 x i8]* %a, i32 0, i32 0 |
| %ptr1 = bitcast i8* %raw1 to double* |
| store volatile double 0.0, double* %ptr1, align 1 |
| %weird_gep1 = getelementptr inbounds [18 x i8], [18 x i8]* %a, i32 0, i32 7 |
| %weird_cast1 = bitcast i8* %weird_gep1 to i16* |
| %weird_load1 = load volatile i16, i16* %weird_cast1, align 1 |
| |
| %raw2 = getelementptr inbounds [18 x i8], [18 x i8]* %a, i32 0, i32 9 |
| %ptr2 = bitcast i8* %raw2 to double* |
| %d1 = load double, double* %ptr1, align 1 |
| store volatile double %d1, double* %ptr2, align 1 |
| %weird_gep2 = getelementptr inbounds [18 x i8], [18 x i8]* %a, i32 0, i32 16 |
| %weird_cast2 = bitcast i8* %weird_gep2 to i16* |
| %weird_load2 = load volatile i16, i16* %weird_cast2, align 1 |
| |
| ret void |
| } |
| |
| define void @test6() { |
| ; Test that we promote alignment when the underlying alloca switches to one |
| ; that innately provides it. |
| ; CHECK-LABEL: @test6( |
| ; CHECK: alloca double |
| ; CHECK: alloca double |
| ; CHECK-NOT: align |
| ; CHECK: ret void |
| |
| entry: |
| %a = alloca [16 x i8] |
| %raw1 = getelementptr inbounds [16 x i8], [16 x i8]* %a, i32 0, i32 0 |
| %ptr1 = bitcast i8* %raw1 to double* |
| store volatile double 0.0, double* %ptr1, align 1 |
| |
| %raw2 = getelementptr inbounds [16 x i8], [16 x i8]* %a, i32 0, i32 8 |
| %ptr2 = bitcast i8* %raw2 to double* |
| %val = load double, double* %ptr1, align 1 |
| store volatile double %val, double* %ptr2, align 1 |
| |
| ret void |
| } |
| |
| define void @test7(i8* %out) { |
| ; Test that we properly compute the destination alignment when rewriting |
| ; memcpys as direct loads or stores. |
| ; CHECK-LABEL: @test7( |
| ; CHECK-NOT: alloca |
| |
| entry: |
| %a = alloca [16 x i8] |
| %raw1 = getelementptr inbounds [16 x i8], [16 x i8]* %a, i32 0, i32 0 |
| %ptr1 = bitcast i8* %raw1 to double* |
| %raw2 = getelementptr inbounds [16 x i8], [16 x i8]* %a, i32 0, i32 8 |
| %ptr2 = bitcast i8* %raw2 to double* |
| |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %raw1, i8* %out, i32 16, i1 false) |
| ; CHECK: %[[val2:.*]] = load double, double* %{{.*}}, align 1 |
| ; CHECK: %[[val1:.*]] = load double, double* %{{.*}}, align 1 |
| |
| %val1 = load double, double* %ptr2, align 1 |
| %val2 = load double, double* %ptr1, align 1 |
| |
| store double %val1, double* %ptr1, align 1 |
| store double %val2, double* %ptr2, align 1 |
| |
| call void @llvm.memcpy.p0i8.p0i8.i32(i8* %out, i8* %raw1, i32 16, i1 false) |
| ; CHECK: store double %[[val1]], double* %{{.*}}, align 1 |
| ; CHECK: store double %[[val2]], double* %{{.*}}, align 1 |
| |
| ret void |
| ; CHECK: ret void |
| } |
| |
| define void @test8() { |
| ; CHECK-LABEL: @test8( |
| ; CHECK: load i32, {{.*}}, align 1 |
| ; CHECK: load i32, {{.*}}, align 1 |
| ; CHECK: load i32, {{.*}}, align 1 |
| ; CHECK: load i32, {{.*}}, align 1 |
| ; CHECK: load i32, {{.*}}, align 1 |
| |
| %ptr = alloca [5 x i32], align 1 |
| %ptr.8 = bitcast [5 x i32]* %ptr to i8* |
| call void @populate(i8* %ptr.8) |
| %val = load [5 x i32], [5 x i32]* %ptr, align 1 |
| ret void |
| } |
| |
| define void @test9() { |
| ; CHECK-LABEL: @test9( |
| ; CHECK: load i32, {{.*}}, align 8 |
| ; CHECK: load i32, {{.*}}, align 4 |
| ; CHECK: load i32, {{.*}}, align 8 |
| ; CHECK: load i32, {{.*}}, align 4 |
| ; CHECK: load i32, {{.*}}, align 8 |
| |
| %ptr = alloca [5 x i32], align 8 |
| %ptr.8 = bitcast [5 x i32]* %ptr to i8* |
| call void @populate(i8* %ptr.8) |
| %val = load [5 x i32], [5 x i32]* %ptr, align 8 |
| ret void |
| } |
| |
| define void @test10() { |
| ; CHECK-LABEL: @test10( |
| ; CHECK: load i32, {{.*}}, align 2 |
| ; CHECK: load i8, {{.*}}, align 2 |
| ; CHECK: load i8, {{.*}}, align 1 |
| ; CHECK: load i8, {{.*}}, align 2 |
| ; CHECK: load i16, {{.*}}, align 2 |
| |
| %ptr = alloca {i32, i8, i8, {i8, i16}}, align 2 |
| %ptr.8 = bitcast {i32, i8, i8, {i8, i16}}* %ptr to i8* |
| call void @populate(i8* %ptr.8) |
| %val = load {i32, i8, i8, {i8, i16}}, {i32, i8, i8, {i8, i16}}* %ptr, align 2 |
| ret void |
| } |
| |
| declare void @populate(i8*) |