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https://github.com/c64scene-ar/llvm-6502.git
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fd90dd5d55
Shrinkify LLVM's footprint by removing the analyze tool and moving its functionality into the opt tool. THis eliminates one of the largest tools from LLVM and doesn't make opt much bigger because it already included most of the analysis passes. To get the old analyze functionality pass the -analyze option to opt. Note that the integeration here is dead simple. The "main" of analyze was just copied to opt and invoked if the -analyze option was given. There may be opportunities for further integration such as removing the distinction between transform passes and analysis passes. To use the analysis functionality, if you previously did this: analyze $FNAME -domset -disable-verify you would now do this: opt -analyze $FNAME -domset -disable-verify Pretty simple. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@29762 91177308-0d34-0410-b5e6-96231b3b80d8
68 lines
2.1 KiB
LLVM
68 lines
2.1 KiB
LLVM
; Test resolvable and unresolvable calls through function pointers:
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; -- both should be retained in function graphs until resolved or until main
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; -- former should get resolved in or before main() and never appear in GG
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; -- latter should remain unresolved in main() and copied to GG
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; -- globals in GG pointed to by latter should be marked I, but not other nodes
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;
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; FIXME: KnownPtr should be just S.
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; RUN: opt -analyze %s -datastructure-gc -dsgc-check-flags=KnownPtr:SI,UnknownPtr:SI -dsgc-dspass=bu
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%Z = internal global int 0
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%X = internal global int 0
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%M = internal global int 0
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%.str_1 = internal constant [9 x sbyte] c"&Z = %p\0A\00"
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implementation
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declare int %printf(sbyte*, ...)
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declare void %exit_dummy(int*)
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internal void %makeCalls(void (int*)* %GpKnown.1, void (int*)* %GpUnknown.1,
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int* %GpKnownPtr, int* %GpUnknownPtr) {
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%tmp.0 = load int* %Z
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%tmp.1.not = setne int %tmp.0, 0
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br bool %tmp.1.not, label %else, label %then
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then:
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; pass to exit_dummy: never resolved
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call void %GpUnknown.1( int* %GpUnknownPtr )
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%tmp.61 = load int* %Z
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%inc1 = add int %tmp.61, 1
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store int %inc1, int* %Z
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%tmp.71 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([9 x sbyte]* %.str_1, long 0, long 0), int* %Z )
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ret void
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else:
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; pass to knownF: resolved in main
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call void %GpKnown.1( int* %GpKnownPtr )
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%tmp.6 = load int* %Z
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%inc = add int %tmp.6, 1
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store int %inc, int* %Z
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; "known external": resolved here
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%tmp.7 = call int (sbyte*, ...)* %printf( sbyte* getelementptr ([9 x sbyte]* %.str_1, long 0, long 0), int* %Z )
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ret void
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}
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internal void %knownF(int* %Y.1) {
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%tmp.1 = seteq int* %Y.1, null
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br bool %tmp.1, label %then, label %UnifiedExitNode
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then:
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call void %knownF( int* %Y.1 ) ; direct call to self: resolved here
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br label %UnifiedExitNode
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UnifiedExitNode:
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ret void
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}
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int %main(int %argc.1) {
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%KnownPtr = alloca int
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%UnknownPtr = alloca int
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store int 1, int* %Z
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call void %makeCalls( void (int*)* %knownF, void (int*)* %exit_dummy,
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int* %KnownPtr, int* %UnknownPtr )
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ret int 0
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}
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