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llvm-project/llvm/test/Transforms/DeadStoreElimination/free.ll

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Filecheckize. llvm-svn: 118874
2010-11-12 10:02:39 +08:00
; RUN: opt < %s -basicaa -dse -S | FileCheck %s
New testcase for DSE llvm-svn: 15198
2004-07-25 15:57:50 +08:00
Filecheckize. llvm-svn: 118874
2010-11-12 10:02:39 +08:00
target datalayout = "e-p:64:64:64"
; CHECK: @test
; CHECK-NEXT: bitcast
; CHECK-NEXT: @free
; CHECK-NEXT: ret void
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
define void @test(i32* %Q, i32* %P) {
%DEAD = load i32* %Q ; <i32> [#uses=1]
store i32 %DEAD, i32* %P
manually upgrade a bunch of tests to modern syntax, and remove some that are either unreduced or only test old syntax. llvm-svn: 133228
2011-06-17 11:14:27 +08:00
%1 = bitcast i32* %P to i8*
tail call void @free(i8* %1)
Remove llvm-upgrade and update test cases. llvm-svn: 47793
2008-03-01 17:15:35 +08:00
ret void
New testcase for DSE llvm-svn: 15198
2004-07-25 15:57:50 +08:00
}
Reimplement the inner loop of DSE. It now uniformly uses getDependence(), doesn't do its own local caching, and is slightly more aggressive about free/store dse (see testcase). This eliminates the last external client of MemDep::getDependenceFrom(). llvm-svn: 60619
2008-12-06 08:53:22 +08:00
Filecheckize. llvm-svn: 118874
2010-11-12 10:02:39 +08:00
; CHECK: @test2
; CHECK-NEXT: bitcast
; CHECK-NEXT: @free
; CHECK-NEXT: ret void
Reimplement the inner loop of DSE. It now uniformly uses getDependence(), doesn't do its own local caching, and is slightly more aggressive about free/store dse (see testcase). This eliminates the last external client of MemDep::getDependenceFrom(). llvm-svn: 60619
2008-12-06 08:53:22 +08:00
define void @test2({i32, i32}* %P) {
%Q = getelementptr {i32, i32} *%P, i32 0, i32 1
store i32 4, i32* %Q
manually upgrade a bunch of tests to modern syntax, and remove some that are either unreduced or only test old syntax. llvm-svn: 133228
2011-06-17 11:14:27 +08:00
%1 = bitcast {i32, i32}* %P to i8*
tail call void @free(i8* %1)
Reimplement the inner loop of DSE. It now uniformly uses getDependence(), doesn't do its own local caching, and is slightly more aggressive about free/store dse (see testcase). This eliminates the last external client of MemDep::getDependenceFrom(). llvm-svn: 60619
2008-12-06 08:53:22 +08:00
ret void
}
Filecheckize. llvm-svn: 118874
2010-11-12 10:02:39 +08:00
Enhance DSE to handle the case where a free call makes more than one store dead. This is especially noticeable in SingleSource/Benchmarks/Shootout/objinst. llvm-svn: 118875
2010-11-12 10:19:17 +08:00
; CHECK: @test4
; CHECK-NOT: store
; CHECK: ret void
define void @test4() {
%m = call i8* @malloc(i64 24)
store i8 0, i8* %m
%m1 = getelementptr i8* %m, i64 1
store i8 1, i8* %m1
call void @free(i8* %m)
ret void
}
declare void @free(i8*)
declare i8* @malloc(i64)