; RUN: opt < %s -sroa -S | 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-n8:16:32:64" declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, 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* %gep_alloca, i8* %gep_a, i32 2, i32 16, i1 false) call void @llvm.memcpy.p0i8.p0i8.i32(i8* %gep_b, i8* %gep_alloca, i32 2, i32 16, 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 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* %aaptr, i8* %aptr, i32 16, i32 2, i1 false) %bptr = bitcast i16* %b to i8* call void @llvm.memcpy.p0i8.p0i8.i32(i8* %bptr, i8* %aaptr, i32 16, i32 2, 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* %a_raw, i8* %x, i32 22, i32 8, 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* %b_gep, i8* %x, i32 18, i32 2, 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, i32 0, 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, i32 0, i1 false) ; CHECK: store double %[[val1]], double* %{{.*}}, align 1 ; CHECK: store double %[[val2]], double* %{{.*}}, align 1 ret void ; CHECK: ret void }