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https://github.com/c64scene-ar/llvm-6502.git
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1d63d92092
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@54466 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
1011 B
LLVM
34 lines
1011 B
LLVM
; RUN: llvm-as < %s | opt -sretpromotion | llvm-dis > %t
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; RUN: cat %t | grep sret | count 1
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; This function is promotable
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define internal void @promotable({i32, i32}* sret %s) {
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%A = getelementptr {i32, i32}* %s, i32 0, i32 0
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store i32 0, i32* %A
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%B = getelementptr {i32, i32}* %s, i32 0, i32 0
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store i32 1, i32* %B
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ret void
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}
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; This function is not promotable (due to it's use below)
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define internal void @notpromotable({i32, i32}* sret %s) {
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%A = getelementptr {i32, i32}* %s, i32 0, i32 0
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store i32 0, i32* %A
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%B = getelementptr {i32, i32}* %s, i32 0, i32 0
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store i32 1, i32* %B
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ret void
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}
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define void @caller({i32, i32}* %t) {
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%s = alloca {i32, i32}
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call void @promotable({i32, i32}* %s)
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%A = getelementptr {i32, i32}* %s, i32 0, i32 0
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%a = load i32* %A
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%B = getelementptr {i32, i32}* %s, i32 0, i32 0
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%b = load i32* %B
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; This passes in something that's not an alloca, which makes the argument not
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; promotable
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call void @notpromotable({i32, i32}* %t)
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ret void
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}
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