derek.holloway
7502bf64a4
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44 lines
2.2 KiB
LLVM
44 lines
2.2 KiB
LLVM
; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 5
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; RUN: opt < %s -msan-check-access-address=0 -S -passes=msan 2>&1 | FileCheck %s
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; Test that code using va_start can be compiled on LoongArch.
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target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"
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target triple = "loongarch64-unknown-linux-gnu"
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define void @VaStart(ptr %s, ...) {
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; CHECK-LABEL: define void @VaStart(
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; CHECK-SAME: ptr [[S:%.*]], ...) {
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; CHECK-NEXT: [[ENTRY:.*:]]
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; CHECK-NEXT: [[TMP1:%.*]] = load i64, ptr @__msan_va_arg_overflow_size_tls, align 8
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; CHECK-NEXT: [[TMP2:%.*]] = alloca i8, i64 [[TMP1]], align 8
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[TMP2]], i8 0, i64 [[TMP1]], i1 false)
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; CHECK-NEXT: [[TMP3:%.*]] = call i64 @llvm.umin.i64(i64 [[TMP1]], i64 800)
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[TMP2]], ptr align 8 @__msan_va_arg_tls, i64 [[TMP3]], i1 false)
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; CHECK-NEXT: call void @llvm.donothing()
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; CHECK-NEXT: [[VL:%.*]] = alloca ptr, align 4
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; CHECK-NEXT: [[TMP4:%.*]] = ptrtoint ptr [[VL]] to i64
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; CHECK-NEXT: [[TMP5:%.*]] = xor i64 [[TMP4]], 87960930222080
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; CHECK-NEXT: [[TMP6:%.*]] = inttoptr i64 [[TMP5]] to ptr
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 4 [[TMP6]], i8 0, i64 8, i1 false)
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; CHECK-NEXT: [[TMP7:%.*]] = ptrtoint ptr [[VL]] to i64
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; CHECK-NEXT: [[TMP8:%.*]] = xor i64 [[TMP7]], 87960930222080
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; CHECK-NEXT: [[TMP9:%.*]] = inttoptr i64 [[TMP8]] to ptr
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; CHECK-NEXT: call void @llvm.memset.p0.i64(ptr align 8 [[TMP9]], i8 0, i64 8, i1 false)
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; CHECK-NEXT: call void @llvm.va_start.p0(ptr [[VL]])
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; CHECK-NEXT: [[TMP10:%.*]] = ptrtoint ptr [[VL]] to i64
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; CHECK-NEXT: [[TMP11:%.*]] = inttoptr i64 [[TMP10]] to ptr
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; CHECK-NEXT: [[TMP12:%.*]] = load ptr, ptr [[TMP11]], align 8
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; CHECK-NEXT: [[TMP13:%.*]] = ptrtoint ptr [[TMP12]] to i64
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; CHECK-NEXT: [[TMP14:%.*]] = xor i64 [[TMP13]], 87960930222080
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; CHECK-NEXT: [[TMP15:%.*]] = inttoptr i64 [[TMP14]] to ptr
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; CHECK-NEXT: call void @llvm.memcpy.p0.p0.i64(ptr align 8 [[TMP15]], ptr align 8 [[TMP2]], i64 [[TMP1]], i1 false)
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; CHECK-NEXT: ret void
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;
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entry:
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%vl = alloca ptr, align 4
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call void @llvm.va_start(ptr %vl)
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ret void
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}
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declare void @llvm.va_start(ptr)
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