c23b4fbdbb
Now that #149310 has restricted lifetime intrinsics to only work on allocas, we can also drop the explicit size argument. Instead, the size is implied by the alloca. This removes the ability to only mark a prefix of an alloca alive/dead. We never used that capability, so we should remove the need to handle that possibility everywhere (though many key places, including stack coloring, did not actually respect this).
61 lines
2.4 KiB
LLVM
61 lines
2.4 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 -passes=verify,iroutliner -ir-outlining-no-cost < %s | FileCheck %s
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; This test checks that we sucecssfully outline identical memmove instructions.
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declare void @llvm.memmove.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1)
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define i8 @function1(ptr noalias %s, ptr noalias %d, i64 %len) {
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entry:
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%a = load i8, ptr %s
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%b = load i8, ptr %d
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call void @llvm.memmove.p0.p0.i64(ptr %d, ptr %s, i64 %len, i1 false)
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%c = add i8 %a, %b
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%ret = load i8, ptr %s
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ret i8 %ret
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}
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define i8 @function2(ptr noalias %s, ptr noalias %d, i64 %len) {
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entry:
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%a = load i8, ptr %s
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%b = load i8, ptr %d
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call void @llvm.memmove.p0.p0.i64(ptr %d, ptr %s, i64 %len, i1 false)
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%c = add i8 %a, %b
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%ret = load i8, ptr %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.p0(ptr [[RET_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[S:%.*]], ptr [[D:%.*]], i64 [[LEN:%.*]], ptr [[RET_LOC]])
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; CHECK-NEXT: [[RET_RELOAD:%.*]] = load i8, ptr [[RET_LOC]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[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.p0(ptr [[RET_LOC]])
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; CHECK-NEXT: call void @outlined_ir_func_0(ptr [[S:%.*]], ptr [[D:%.*]], i64 [[LEN:%.*]], ptr [[RET_LOC]])
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; CHECK-NEXT: [[RET_RELOAD:%.*]] = load i8, ptr [[RET_LOC]], align 1
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; CHECK-NEXT: call void @llvm.lifetime.end.p0(ptr [[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, ptr [[TMP0:%.*]], align 1
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; CHECK-NEXT: [[B:%.*]] = load i8, ptr [[TMP1:%.*]], align 1
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; CHECK-NEXT: call void @llvm.memmove.p0.p0.i64(ptr [[TMP1]], ptr [[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, ptr [[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]], ptr [[TMP3:%.*]], align 1
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; CHECK-NEXT: ret void
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;
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