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4362387c74
functions that don't already have a (dynamic) alloca. Dynamic allocas cause inefficient codegen and we shouldn't propagate this (behavior follows gcc). Two existing tests assumed such inlining would be done; they are hacked by adding an alloca in the caller, preserving the point of the tests. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@61946 91177308-0d34-0410-b5e6-96231b3b80d8
37 lines
1.0 KiB
LLVM
37 lines
1.0 KiB
LLVM
; RUN: llvm-as < %s | opt -inline | llvm-dis | grep call
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; Do not inline calls to variable-sized alloca.
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@q = common global i8* null ; <i8**> [#uses=1]
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define i8* @a(i32 %i) nounwind {
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entry:
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%i_addr = alloca i32 ; <i32*> [#uses=2]
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%retval = alloca i8* ; <i8**> [#uses=1]
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%p = alloca i8* ; <i8**> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 %i, i32* %i_addr
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%0 = load i32* %i_addr, align 4 ; <i32> [#uses=1]
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%1 = alloca i8, i32 %0 ; <i8*> [#uses=1]
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store i8* %1, i8** %p, align 4
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%2 = load i8** %p, align 4 ; <i8*> [#uses=1]
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store i8* %2, i8** @q, align 4
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br label %return
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return: ; preds = %entry
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%retval1 = load i8** %retval ; <i8*> [#uses=1]
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ret i8* %retval1
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}
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define void @b(i32 %i) nounwind {
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entry:
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%i_addr = alloca i32 ; <i32*> [#uses=2]
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%"alloca point" = bitcast i32 0 to i32 ; <i32> [#uses=0]
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store i32 %i, i32* %i_addr
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%0 = load i32* %i_addr, align 4 ; <i32> [#uses=1]
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%1 = call i8* @a(i32 %0) nounwind ; <i8*> [#uses=0]
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br label %return
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return: ; preds = %entry
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ret void
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}
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