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https://github.com/c64scene-ar/llvm-6502.git
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ec9a35a6f9
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47793 91177308-0d34-0410-b5e6-96231b3b80d8
34 lines
867 B
LLVM
34 lines
867 B
LLVM
; RUN: llvm-as < %s | opt -deadargelim -die | llvm-dis | not grep DEAD
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@P = external global i32 ; <i32*> [#uses=1]
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; Dead arg only used by dead retval
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define internal i32 @test(i32 %DEADARG) {
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ret i32 %DEADARG
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}
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define internal i32 @test2(i32 %DEADARG) {
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%DEADRETVAL = call i32 @test( i32 %DEADARG ) ; <i32> [#uses=1]
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ret i32 %DEADRETVAL
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}
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define void @test3(i32 %X) {
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%DEADRETVAL = call i32 @test2( i32 %X ) ; <i32> [#uses=0]
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ret void
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}
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define internal i32 @foo() {
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%DEAD = load i32* @P ; <i32> [#uses=1]
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ret i32 %DEAD
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}
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define internal i32 @id(i32 %X) {
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ret i32 %X
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}
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define void @test4() {
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%DEAD = call i32 @foo( ) ; <i32> [#uses=1]
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%DEAD2 = call i32 @id( i32 %DEAD ) ; <i32> [#uses=0]
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ret void
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}
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