33 lines
1.2 KiB
LLVM
33 lines
1.2 KiB
LLVM
; RUN: opt -instcombine -S < %s | FileCheck %s
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target datalayout = "e-m:o-p:40:64:64:32-i64:64-f80:128-n8:16:32:64-S128"
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; check that memory builtins can be handled.
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define i64 @objsize1_custom_idx(i64 %sz) {
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entry:
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%ptr = call i8* @malloc(i64 %sz)
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%ptr2 = getelementptr inbounds i8, i8* %ptr, i32 2
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%calc_size = call i64 @llvm.objectsize.i64.p0i8(i8* %ptr2, i1 false, i1 true, i1 true)
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ret i64 %calc_size
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}
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%struct.V = type { [10 x i8], i32, [10 x i8] }
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define i32 @objsize2_custom_idx() #0 {
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entry:
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%var = alloca %struct.V, align 4
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%0 = bitcast %struct.V* %var to i8*
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call void @llvm.lifetime.start.p0i8(i64 28, i8* %0) #3
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%buf1 = getelementptr inbounds %struct.V, %struct.V* %var, i32 0, i32 0
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%arrayidx = getelementptr inbounds [10 x i8], [10 x i8]* %buf1, i64 0, i64 1
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%1 = call i64 @llvm.objectsize.i64.p0i8(i8* %arrayidx, i1 false, i1 false, i1 false)
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%conv = trunc i64 %1 to i32
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call void @llvm.lifetime.end.p0i8(i64 28, i8* %0) #3
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ret i32 %conv
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; CHECK: ret i32 27
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}
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declare void @llvm.lifetime.start.p0i8(i64, i8* nocapture) #1
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declare void @llvm.lifetime.end.p0i8(i64, i8* nocapture) #1
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declare i8* @malloc(i64)
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declare i64 @llvm.objectsize.i64.p0i8(i8*, i1, i1, i1)
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