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llvm-project/llvm/test/Transforms/ConstantMerge/2011-01-15-EitherOrder.ll

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Tests: rewrite 'opt ... %s' to 'opt ... < %s' so that opt does not emit a ModuleID This is done to avoid odd test failures, like the one fixed in r171243. llvm-svn: 171246
2012-12-30 09:28:40 +08:00
; RUN: opt -constmerge -S < %s | FileCheck %s
Make constmerge a two-pass algorithm so that it won't miss merging opporuntities. Fixes PR8978. llvm-svn: 123541
2011-01-16 02:14:21 +08:00
; PR8978
declare i32 @zed(%struct.foobar*, %struct.foobar*)
%struct.foobar = type { i32 }
; CHECK: bar.d
Don't merge two constants if we care about the address of both. This fixes the original testcase in PR8927. It also causes a clang binary built with a patched clang to increase in size by 0.21%. We can probably get some of the size back by writing a pass that detects that a global never has its pointer compared and adds unnamed_addr to it (maybe extend global opt). It is also possible that there are some other cases clang could add unnamed_addr to. I will investigate extending globalopt next. llvm-svn: 123584
2011-01-17 01:05:09 +08:00
@bar.d = unnamed_addr constant %struct.foobar zeroinitializer, align 4
Make constmerge a two-pass algorithm so that it won't miss merging opporuntities. Fixes PR8978. llvm-svn: 123541
2011-01-16 02:14:21 +08:00
; CHECK-NOT: foo.d
@foo.d = internal constant %struct.foobar zeroinitializer, align 4
define i32 @main() nounwind ssp {
entry:
; CHECK: bar.d
%call2 = tail call i32 @zed(%struct.foobar* @foo.d, %struct.foobar* @bar.d)
nounwind
ret i32 0
}