246 lines
11 KiB
LLVM
246 lines
11 KiB
LLVM
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
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; RUN: opt -S -memcpyopt < %s -enable-memcpyopt-memoryssa=0 | FileCheck %s --check-prefixes=CHECK,NO_MSSA
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; RUN: opt -S -memcpyopt < %s -enable-memcpyopt-memoryssa=1 -verify-memoryssa | FileCheck %s --check-prefixes=CHECK,MSSA
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define i8 @read_dest_between_call_and_memcpy() {
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; CHECK-LABEL: @read_dest_between_call_and_memcpy(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: store i8 1, i8* [[DEST_I8]], align 1
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: [[X:%.*]] = load i8, i8* [[DEST_I8]], align 1
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DEST_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: ret i8 [[X]]
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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store i8 1, i8* %dest.i8
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call void @llvm.memset.p0i8.i64(i8* %src.i8, i8 0, i64 16, i1 false)
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%x = load i8, i8* %dest.i8
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret i8 %x
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}
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define i8 @read_src_between_call_and_memcpy() {
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; NO_MSSA-LABEL: @read_src_between_call_and_memcpy(
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; NO_MSSA-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; NO_MSSA-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; NO_MSSA-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; NO_MSSA-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; NO_MSSA-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; NO_MSSA-NEXT: [[X:%.*]] = load i8, i8* [[SRC_I8]], align 1
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; NO_MSSA-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[DEST_I8]], i8* [[SRC_I8]], i64 16, i1 false)
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; NO_MSSA-NEXT: ret i8 [[X]]
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;
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; MSSA-LABEL: @read_src_between_call_and_memcpy(
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; MSSA-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; MSSA-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; MSSA-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; MSSA-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; MSSA-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; MSSA-NEXT: [[X:%.*]] = load i8, i8* [[SRC_I8]], align 1
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; MSSA-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DEST_I8]], i8 0, i64 16, i1 false)
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; MSSA-NEXT: ret i8 [[X]]
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @llvm.memset.p0i8.i64(i8* %src.i8, i8 0, i64 16, i1 false)
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%x = load i8, i8* %src.i8
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret i8 %x
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}
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define void @write_dest_between_call_and_memcpy() {
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; CHECK-LABEL: @write_dest_between_call_and_memcpy(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: store i8 1, i8* [[DEST_I8]], align 1
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DEST_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @llvm.memset.p0i8.i64(i8* %src.i8, i8 0, i64 16, i1 false)
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store i8 1, i8* %dest.i8
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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define void @write_src_between_call_and_memcpy() {
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; CHECK-LABEL: @write_src_between_call_and_memcpy(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: store i8 1, i8* [[SRC_I8]], align 1
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[DEST_I8]], i8* [[SRC_I8]], i64 16, i1 false)
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @llvm.memset.p0i8.i64(i8* %src.i8, i8 0, i64 16, i1 false)
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store i8 1, i8* %src.i8
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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define void @throw_between_call_and_mempy(i8* dereferenceable(16) %dest.i8) {
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; CHECK-LABEL: @throw_between_call_and_mempy(
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[SRC_I8]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: call void @may_throw() [[ATTR2:#.*]]
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; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* [[DEST_I8:%.*]], i8 0, i64 16, i1 false)
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; CHECK-NEXT: ret void
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;
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%src = alloca [16 x i8]
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @llvm.memset.p0i8.i64(i8* %src.i8, i8 0, i64 16, i1 false)
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call void @may_throw() readnone
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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define void @dest_is_gep_nounwind_call() {
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; CHECK-LABEL: @dest_is_gep_nounwind_call(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [8 x i8], align 1
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [8 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: [[DEST_I8:%.*]] = getelementptr [16 x i8], [16 x i8]* [[DEST]], i64 0, i64 8
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; CHECK-NEXT: [[DEST_I81:%.*]] = bitcast i8* [[DEST_I8]] to [8 x i8]*
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; CHECK-NEXT: [[DEST_I812:%.*]] = bitcast [8 x i8]* [[DEST_I81]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I812]]) [[ATTR3:#.*]]
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [8 x i8]
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%src.i8 = bitcast [8 x i8]* %src to i8*
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%dest.i8 = getelementptr [16 x i8], [16 x i8]* %dest, i64 0, i64 8
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call void @accept_ptr(i8* %src.i8) nounwind
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 8, i1 false)
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ret void
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}
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define void @dest_is_gep_may_throw_call() {
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; CHECK-LABEL: @dest_is_gep_may_throw_call(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [8 x i8], align 1
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [8 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: [[DEST_I8:%.*]] = getelementptr [16 x i8], [16 x i8]* [[DEST]], i64 0, i64 8
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; CHECK-NEXT: [[DEST_I81:%.*]] = bitcast i8* [[DEST_I8]] to [8 x i8]*
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; CHECK-NEXT: [[DEST_I812:%.*]] = bitcast [8 x i8]* [[DEST_I81]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I812]])
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [8 x i8]
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%src.i8 = bitcast [8 x i8]* %src to i8*
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%dest.i8 = getelementptr [16 x i8], [16 x i8]* %dest, i64 0, i64 8
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call void @accept_ptr(i8* %src.i8)
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 8, i1 false)
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ret void
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}
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define void @dest_is_gep_requires_movement() {
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; CHECK-LABEL: @dest_is_gep_requires_movement(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [8 x i8], align 1
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [8 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: [[DEST_I8:%.*]] = getelementptr [16 x i8], [16 x i8]* [[DEST]], i64 0, i64 8
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; CHECK-NEXT: [[DEST_I81:%.*]] = bitcast i8* [[DEST_I8]] to [8 x i8]*
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; CHECK-NEXT: [[DEST_I812:%.*]] = bitcast [8 x i8]* [[DEST_I81]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I812]]) [[ATTR3]]
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [8 x i8]
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%src.i8 = bitcast [8 x i8]* %src to i8*
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call void @accept_ptr(i8* %src.i8) nounwind
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%dest.i8 = getelementptr [16 x i8], [16 x i8]* %dest, i64 0, i64 8
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 8, i1 false)
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ret void
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}
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define void @capture_before_call_argmemonly() {
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; CHECK-LABEL: @capture_before_call_argmemonly(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I8]])
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; CHECK-NEXT: [[DEST1:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST1]]) [[ATTR4:#.*]]
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @accept_ptr(i8* %dest.i8) ; capture
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call void @accept_ptr(i8* %src.i8) argmemonly
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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define void @capture_before_call_argmemonly_nounwind() {
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; CHECK-LABEL: @capture_before_call_argmemonly_nounwind(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I8]])
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; CHECK-NEXT: [[DEST1:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST1]]) [[ATTR5:#.*]]
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @accept_ptr(i8* %dest.i8) ; capture
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; NB: argmemonly currently implies willreturn.
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call void @accept_ptr(i8* %src.i8) argmemonly nounwind
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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define void @capture_before_call_argmemonly_nounwind_willreturn() {
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; CHECK-LABEL: @capture_before_call_argmemonly_nounwind_willreturn(
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; CHECK-NEXT: [[DEST:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[SRC:%.*]] = alloca [16 x i8], align 1
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; CHECK-NEXT: [[DEST_I8:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: [[SRC_I8:%.*]] = bitcast [16 x i8]* [[SRC]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST_I8]])
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; CHECK-NEXT: [[DEST1:%.*]] = bitcast [16 x i8]* [[DEST]] to i8*
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; CHECK-NEXT: call void @accept_ptr(i8* [[DEST1]]) [[ATTR0:#.*]]
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; CHECK-NEXT: ret void
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;
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%dest = alloca [16 x i8]
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%src = alloca [16 x i8]
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%dest.i8 = bitcast [16 x i8]* %dest to i8*
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%src.i8 = bitcast [16 x i8]* %src to i8*
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call void @accept_ptr(i8* %dest.i8) ; capture
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call void @accept_ptr(i8* %src.i8) argmemonly nounwind willreturn
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %dest.i8, i8* %src.i8, i64 16, i1 false)
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ret void
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}
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declare void @may_throw()
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declare void @accept_ptr(i8*)
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8*, i8*, i64, i1)
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declare void @llvm.memset.p0i8.i64(i8*, i8, i64, i1)
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