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https://github.com/c64scene-ar/llvm-6502.git
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338cd6ba6e
the argument to be stored to an alloca by tracking uses of the alloca. This occurs 4 times (out of 7121, 0.05%) in MultiSource/Applications, so may not be worth it. On the other hand, it is easy to do and fairly cheap. The functions it helps are: W_addcom and W_addlit in spiff; process_args (argv) in d (make_dparser); ercPixConcealIMB in JM/ldecod. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61570 91177308-0d34-0410-b5e6-96231b3b80d8
24 lines
606 B
LLVM
24 lines
606 B
LLVM
; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | not grep {nocapture *%%q}
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; RUN: llvm-as < %s | opt -functionattrs | llvm-dis | grep {nocapture *%%p}
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@g = external global i32**
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define i32 @f(i32* %p, i32* %q) {
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%a1 = alloca i32*
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%a2 = alloca i32**
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store i32* %p, i32** %a1
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store i32** %a1, i32*** %a2
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%reload1 = load i32*** %a2
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%reload2 = load i32** %reload1
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%load_p = load i32* %reload2
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store i32 0, i32* %reload2
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%b1 = alloca i32*
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%b2 = alloca i32**
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store i32* %q, i32** %b1
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store i32** %b1, i32*** %b2
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%reload3 = load i32*** %b2
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store i32** %reload3, i32*** @g
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ret i32 %load_p
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}
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