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llvm-project/llvm/test/CodeGen/X86/remat-constant.ll

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factor some logic out into a helper function, allow remat of loads from constant globals. This implements remat-constant.ll even without aggressive-remat. llvm-svn: 74373
2009-06-27 12:38:55 +08:00
; RUN: llvm-as < %s | llc -mtriple=x86_64-linux -relocation-model=static | grep xmm | count 2
Enable rematerialization of constants using AliasAnalysis::pointsToConstantMemory, and knowledge of PseudoSourceValues. This unfortunately isn't sufficient to allow constants to be rematerialized in PIC mode -- the extra indirection is a complication. llvm-svn: 54000
2008-07-25 08:02:30 +08:00
declare void @bar() nounwind
@a = external constant float
declare void @qux(float %f) nounwind
define void @foo() nounwind {
%f = load float* @a
call void @bar()
call void @qux(float %f)
call void @qux(float %f)
ret void
}