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Teach the DataLayout aware constant folder to be much more aggressive…
… towards 'and' instructions. This is a pattern that shows up a lot in ubsan binaries. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@175128 91177308-0d34-0410-b5e6-96231b3b80d8
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; RUN: opt -instcombine %s -S -o - | FileCheck %s | ||
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target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128" | ||
target triple = "x86_64-unknown-linux-gnu" | ||
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%test1.struct = type { i32, i32 } | ||
@test1.aligned_glbl = global %test1.struct zeroinitializer, align 4 | ||
define void @test1(i64 *%ptr) { | ||
store i64 and (i64 ptrtoint (i32* getelementptr (%test1.struct* @test1.aligned_glbl, i32 0, i32 1) to i64), i64 3), i64* %ptr | ||
; CHECK: store i64 0, i64* %ptr | ||
ret void | ||
} |