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llvm-mirror/test/Transforms/DeadStoreElimination/PartialStore.ll
Dan Gohman 6aff5b94ff Make BasicAliasAnalysis a normal AliasAnalysis implementation which
does normal initialization and normal chaining. Change the default
AliasAnalysis implementation to NoAlias.

Update StandardCompileOpts.h and friends to explicitly request
BasicAliasAnalysis.

Update tests to explicitly request -basicaa.

llvm-svn: 116720
2010-10-18 18:04:47 +00:00

15 lines
581 B
LLVM

; RUN: opt < %s -basicaa -dse -S | \
; RUN: not grep {store i8}
; Ensure that the dead store is deleted in this case. It is wholely
; overwritten by the second store.
target datalayout = "E-p:64:64:64-a0:0:8-f32:32:32-f64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-v64:64:64-v128:128:128"
define i32 @test() {
%V = alloca i32 ; <i32*> [#uses=3]
%V2 = bitcast i32* %V to i8* ; <i8*> [#uses=1]
store i8 0, i8* %V2
store i32 1234567, i32* %V
%X = load i32* %V ; <i32> [#uses=1]
ret i32 %X
}