81 lines
4.5 KiB
LLVM
81 lines
4.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
|
|
; RUN: opt -S -memcpyopt < %s | FileCheck %s
|
|
|
|
define void @test_copy_uninit([1000 x [1000 x i32]]* %arg) {
|
|
; CHECK-LABEL: @test_copy_uninit(
|
|
; CHECK-NEXT: start:
|
|
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [1000 x i32], align 4
|
|
; CHECK-NEXT: [[ALLOCA_I8:%.*]] = bitcast [1000 x i32]* [[ALLOCA]] to i8*
|
|
; CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG:%.*]], i64 0, i64 0
|
|
; CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG]], i64 0, i64 1000
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[CURRENT:%.*]] = phi [1000 x i32]* [ [[BEGIN]], [[START:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ]
|
|
; CHECK-NEXT: [[CURRENT_I8:%.*]] = bitcast [1000 x i32]* [[CURRENT]] to i8*
|
|
; CHECK-NEXT: [[NEXT]] = getelementptr inbounds [1000 x i32], [1000 x i32]* [[CURRENT]], i64 1
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp eq [1000 x i32]* [[NEXT]], [[END]]
|
|
; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
start:
|
|
%alloca = alloca [1000 x i32], align 4
|
|
%alloca.i8 = bitcast [1000 x i32]* %alloca to i8*
|
|
%begin = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 0
|
|
%end = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 1000
|
|
br label %loop
|
|
|
|
loop: ; preds = %loop, %start
|
|
%current = phi [1000 x i32]* [ %begin, %start ], [ %next, %loop ]
|
|
%current.i8 = bitcast [1000 x i32]* %current to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %current.i8, i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i64 4000, i1 false)
|
|
%next = getelementptr inbounds [1000 x i32], [1000 x i32]* %current, i64 1
|
|
%cond = icmp eq [1000 x i32]* %next, %end
|
|
br i1 %cond, label %exit, label %loop
|
|
|
|
exit: ; preds = %loop
|
|
ret void
|
|
}
|
|
|
|
define void @test_copy_zero([1000 x [1000 x i32]]* %arg) {
|
|
; CHECK-LABEL: @test_copy_zero(
|
|
; CHECK-NEXT: start:
|
|
; CHECK-NEXT: [[ALLOCA:%.*]] = alloca [1000 x i32], align 4
|
|
; CHECK-NEXT: [[ALLOCA_I8:%.*]] = bitcast [1000 x i32]* [[ALLOCA]] to i8*
|
|
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) [[ALLOCA_I8]], i8 0, i64 4000, i1 false)
|
|
; CHECK-NEXT: [[BEGIN:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG:%.*]], i64 0, i64 0
|
|
; CHECK-NEXT: [[END:%.*]] = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* [[ARG]], i64 0, i64 1000
|
|
; CHECK-NEXT: br label [[LOOP:%.*]]
|
|
; CHECK: loop:
|
|
; CHECK-NEXT: [[CURRENT:%.*]] = phi [1000 x i32]* [ [[BEGIN]], [[START:%.*]] ], [ [[NEXT:%.*]], [[LOOP]] ]
|
|
; CHECK-NEXT: [[CURRENT_I8:%.*]] = bitcast [1000 x i32]* [[CURRENT]] to i8*
|
|
; CHECK-NEXT: call void @llvm.memset.p0i8.i64(i8* align 4 [[CURRENT_I8]], i8 0, i64 4000, i1 false)
|
|
; CHECK-NEXT: [[NEXT]] = getelementptr inbounds [1000 x i32], [1000 x i32]* [[CURRENT]], i64 1
|
|
; CHECK-NEXT: [[COND:%.*]] = icmp eq [1000 x i32]* [[NEXT]], [[END]]
|
|
; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]]
|
|
; CHECK: exit:
|
|
; CHECK-NEXT: ret void
|
|
;
|
|
start:
|
|
%alloca = alloca [1000 x i32], align 4
|
|
%alloca.i8 = bitcast [1000 x i32]* %alloca to i8*
|
|
call void @llvm.memset.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i8 0, i64 4000, i1 false)
|
|
%begin = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 0
|
|
%end = getelementptr inbounds [1000 x [1000 x i32]], [1000 x [1000 x i32]]* %arg, i64 0, i64 1000
|
|
br label %loop
|
|
|
|
loop: ; preds = %loop, %start
|
|
%current = phi [1000 x i32]* [ %begin, %start ], [ %next, %loop ]
|
|
%current.i8 = bitcast [1000 x i32]* %current to i8*
|
|
call void @llvm.memcpy.p0i8.p0i8.i64(i8* nonnull align 4 dereferenceable(4000) %current.i8, i8* nonnull align 4 dereferenceable(4000) %alloca.i8, i64 4000, i1 false)
|
|
%next = getelementptr inbounds [1000 x i32], [1000 x i32]* %current, i64 1
|
|
%cond = icmp eq [1000 x i32]* %next, %end
|
|
br i1 %cond, label %exit, label %loop
|
|
|
|
exit: ; preds = %loop
|
|
ret void
|
|
}
|
|
|
|
declare void @llvm.memset.p0i8.i64(i8* nocapture writeonly, i8, i64, i1 immarg)
|
|
declare void @llvm.memcpy.p0i8.p0i8.i64(i8* noalias nocapture writeonly, i8* noalias nocapture readonly, i64, i1 immarg)
|