forked from OSchip/llvm-project
61 lines
2.5 KiB
LLVM
61 lines
2.5 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --include-generated-funcs
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; RUN: opt -S -verify -iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; This test checks that we successfully outline identical memcpy instructions.
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declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i1)
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define i8 @function1(i8* noalias %s, i8* noalias %d, i64 %len) {
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entry:
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%a = load i8, i8* %s
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%b = load i8, i8* %d
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 %len, i1 false)
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%c = add i8 %a, %b
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%ret = load i8, i8* %s
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ret i8 %ret
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}
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define i8 @function2(i8* noalias %s, i8* noalias %d, i64 %len) {
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entry:
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%a = load i8, i8* %s
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%b = load i8, i8* %d
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call void @llvm.memcpy.p0i8.p0i8.i64(i8* %d, i8* %s, i64 %len, i1 false)
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%c = add i8 %a, %b
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%ret = load i8, i8* %s
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ret i8 %ret
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}
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; CHECK-LABEL: @function1(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[RET_LOC:%.*]] = alloca i8, align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[RET_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(i8* [[S:%.*]], i8* [[D:%.*]], i64 [[LEN:%.*]], i8* [[RET_LOC]])
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; CHECK-NEXT: [[RET_RELOAD:%.*]] = load i8, i8* [[RET_LOC]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[RET_LOC]])
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; CHECK-NEXT: ret i8 [[RET_RELOAD]]
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;
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;
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; CHECK-LABEL: @function2(
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; CHECK-NEXT: entry:
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; CHECK-NEXT: [[RET_LOC:%.*]] = alloca i8, align 1
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; CHECK-NEXT: call void @llvm.lifetime.start.p0i8(i64 -1, i8* [[RET_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(i8* [[S:%.*]], i8* [[D:%.*]], i64 [[LEN:%.*]], i8* [[RET_LOC]])
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; CHECK-NEXT: [[RET_RELOAD:%.*]] = load i8, i8* [[RET_LOC]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0i8(i64 -1, i8* [[RET_LOC]])
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; CHECK-NEXT: ret i8 [[RET_RELOAD]]
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;
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;
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; CHECK: define internal void @outlined_ir_func_0(
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; CHECK-NEXT: newFuncRoot:
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; CHECK-NEXT: br label [[ENTRY_TO_OUTLINE:%.*]]
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; CHECK: entry_to_outline:
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; CHECK-NEXT: [[A:%.*]] = load i8, i8* [[TMP0:%.*]], align 1
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; CHECK-NEXT: [[B:%.*]] = load i8, i8* [[TMP1:%.*]], align 1
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; CHECK-NEXT: call void @llvm.memcpy.p0i8.p0i8.i64(i8* [[TMP1]], i8* [[TMP0]], i64 [[TMP2:%.*]], i1 false)
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; CHECK-NEXT: [[C:%.*]] = add i8 [[A]], [[B]]
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; CHECK-NEXT: [[RET:%.*]] = load i8, i8* [[TMP0]], align 1
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; CHECK-NEXT: br label [[ENTRY_AFTER_OUTLINE_EXITSTUB:%.*]]
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; CHECK: entry_after_outline.exitStub:
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; CHECK-NEXT: store i8 [[RET]], i8* [[TMP3:%.*]], align 1
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; CHECK-NEXT: ret void
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;
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