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27c9c6ef84
While not strictly necessary, since we don't support large integer types, this avoids bugs due to silent truncation from uint64_t to a 32-bit unsigned (e.g. DL.isLegalInteger(DL.getTypeSizeInBits(Ty) ) This fixes PR26972. Differential Revision: http://reviews.llvm.org/D18258 llvm-svn: 263850
18 lines
593 B
LLVM
18 lines
593 B
LLVM
; RUN: opt < %s -sroa -S | FileCheck %s
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target datalayout = "e-m:o-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-pc-linux"
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; Make sure we properly handle allocas where the allocated
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; size overflows a uint32_t. This specific constant results in
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; the size in bits being 32 after truncation to a 32-bit int.
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; CHECK-LABEL: fn1
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; CHECK-NEXT: ret void
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define void @fn1() {
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%a = alloca [1073741825 x i32], align 16
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%t0 = bitcast [1073741825 x i32]* %a to i8*
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call void @llvm.lifetime.end(i64 4294967300, i8* %t0)
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ret void
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}
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declare void @llvm.lifetime.end(i64, i8* nocapture)
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