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llvm-mirror/test/Transforms/DeadStoreElimination/partial-overwrite.ll
Nick Lewycky f6be02e523 Reapply r86359, "Teach dead store elimination that certain intrinsics write to
memory just like a store" with bug fixed (partial-overwrite.ll is the
regression test).

llvm-svn: 86667
2009-11-10 06:46:40 +00:00

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457 B
LLVM

; RUN: opt -dse -S %s | FileCheck %s
; Note that we could do better by merging the two stores into one.
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"
target triple = "x86_64-unknown-linux-gnu"
define void @test(i32* %P) {
store i32 0, i32* %P
; CHECK: store i32
%Q = bitcast i32* %P to i16*
store i16 1, i16* %Q
; CHECK: store i16
ret void
}