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cf2cc040a3
PPC_FP128 is really the sum of two consecutive doubles, where the first double is always stored first in memory, regardless of the target endianness. The memory layout of i128, however, depends on the target endianness, and so we can't fold this without target endianness information. As a result, we must not do this folding in lib/IR/ConstantFold.cpp (it could be done instead in Analysis/ConstantFolding.cpp, but that's not done now). Fixes PR23026. llvm-svn: 233481
37 lines
1.4 KiB
LLVM
37 lines
1.4 KiB
LLVM
; RUN: opt < %s -sroa -S | FileCheck %s
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target datalayout = "E-m:e-i64:64-n32:64"
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target triple = "powerpc64-unknown-linux-gnu"
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%struct.ld2 = type { [2 x ppc_fp128] }
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declare void @bar(i8*, [2 x i128])
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define void @foo(i8* %v) #0 {
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entry:
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%v.addr = alloca i8*, align 8
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%z = alloca %struct.ld2, align 16
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store i8* %v, i8** %v.addr, align 8
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%dat = getelementptr inbounds %struct.ld2, %struct.ld2* %z, i32 0, i32 0
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%arrayidx = getelementptr inbounds [2 x ppc_fp128], [2 x ppc_fp128]* %dat, i32 0, i64 0
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store ppc_fp128 0xM403B0000000000000000000000000000, ppc_fp128* %arrayidx, align 16
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%dat1 = getelementptr inbounds %struct.ld2, %struct.ld2* %z, i32 0, i32 0
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%arrayidx2 = getelementptr inbounds [2 x ppc_fp128], [2 x ppc_fp128]* %dat1, i32 0, i64 1
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store ppc_fp128 0xM4093B400000000000000000000000000, ppc_fp128* %arrayidx2, align 16
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%0 = load i8*, i8** %v.addr, align 8
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%coerce.dive = getelementptr %struct.ld2, %struct.ld2* %z, i32 0, i32 0
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%1 = bitcast [2 x ppc_fp128]* %coerce.dive to [2 x i128]*
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%2 = load [2 x i128], [2 x i128]* %1, align 1
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call void @bar(i8* %0, [2 x i128] %2)
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ret void
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}
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; CHECK-LABEL: @foo
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; CHECK-NOT: i128 4628293042053316608
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; CHECK-NOT: i128 4653260752096854016
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; CHECK-DAG: i128 bitcast (ppc_fp128 0xM403B0000000000000000000000000000 to i128)
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; CHECK-DAG: i128 bitcast (ppc_fp128 0xM4093B400000000000000000000000000 to i128)
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; CHECK: call void @bar(i8* %v, [2 x i128]
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; CHECK: ret void
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attributes #0 = { nounwind }
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