37 lines
1.4 KiB
LLVM
37 lines
1.4 KiB
LLVM
; RUN: opt < %s -basicaa -memcpyopt -dse -S | grep "call.*initialize" | not grep memtmp
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; PR2077
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target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32"
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target triple = "i386-pc-linux-gnu"
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%0 = type { x86_fp80, x86_fp80 }
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define internal fastcc void @initialize(%0* noalias nocapture sret %agg.result) nounwind {
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entry:
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%agg.result.03 = getelementptr %0, %0* %agg.result, i32 0, i32 0
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store x86_fp80 0xK00000000000000000000, x86_fp80* %agg.result.03
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%agg.result.15 = getelementptr %0, %0* %agg.result, i32 0, i32 1
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store x86_fp80 0xK00000000000000000000, x86_fp80* %agg.result.15
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ret void
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}
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declare fastcc x86_fp80 @passed_uninitialized(%0* nocapture) nounwind
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define fastcc void @badly_optimized() nounwind {
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entry:
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%z = alloca %0
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%tmp = alloca %0
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%memtmp = alloca %0, align 8
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call fastcc void @initialize(%0* noalias sret %memtmp)
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%tmp1 = bitcast %0* %tmp to i8*
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%memtmp2 = bitcast %0* %memtmp to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %tmp1, i8* %memtmp2, i32 24, i32 8, i1 false)
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%z3 = bitcast %0* %z to i8*
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%tmp4 = bitcast %0* %tmp to i8*
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call void @llvm.memcpy.p0i8.p0i8.i32(i8* %z3, i8* %tmp4, i32 24, i32 8, i1 false)
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%tmp5 = call fastcc x86_fp80 @passed_uninitialized(%0* %z)
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ret void
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}
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declare void @llvm.memcpy.p0i8.p0i8.i32(i8* nocapture, i8* nocapture, i32, i32, i1) nounwind
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