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llvm-project/llvm/test/Transforms/InstCombine/2008-01-14-VarArgTrampoline.ll

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Change tests from "opt %s" to "opt < %s" so that opt doesn't see the input filename so that opt doesn't print the input filename in the output so that grep lines in the tests don't unintentionally match strings in the input filename. llvm-svn: 81537
2009-09-12 02:01:28 +08:00
; RUN: opt < %s -instcombine -S | grep zeroext
I noticed that the trampoline straightening transformation could drop attributes on varargs call arguments. Also, it could generate invalid IR if the transformed call already had the 'nest' attribute somewhere (this can never happen for code coming from llvm-gcc, but it's a theoretical possibility). Fix both problems. llvm-svn: 45973
2008-01-15 03:52:09 +08:00
%struct.FRAME.nest = type { i32, i32 (...)* }
%struct.__builtin_trampoline = type { [10 x i8] }
declare i8* @llvm.init.trampoline(i8*, i8*, i8*) nounwind
declare i32 @f(%struct.FRAME.nest* nest , ...)
define i32 @nest(i32 %n) {
entry:
%FRAME.0 = alloca %struct.FRAME.nest, align 8 ; <%struct.FRAME.nest*> [#uses=3]
%TRAMP.216 = alloca [10 x i8], align 16 ; <[10 x i8]*> [#uses=1]
%TRAMP.216.sub = getelementptr [10 x i8]* %TRAMP.216, i32 0, i32 0 ; <i8*> [#uses=1]
%tmp3 = getelementptr %struct.FRAME.nest* %FRAME.0, i32 0, i32 0 ; <i32*> [#uses=1]
store i32 %n, i32* %tmp3, align 8
%FRAME.06 = bitcast %struct.FRAME.nest* %FRAME.0 to i8* ; <i8*> [#uses=1]
%tramp = call i8* @llvm.init.trampoline( i8* %TRAMP.216.sub, i8* bitcast (i32 (%struct.FRAME.nest*, ...)* @f to i8*), i8* %FRAME.06 ) ; <i8*> [#uses=1]
%tmp7 = getelementptr %struct.FRAME.nest* %FRAME.0, i32 0, i32 1 ; <i32 (...)**> [#uses=1]
%tmp89 = bitcast i8* %tramp to i32 (...)* ; <i32 (...)*> [#uses=2]
store i32 (...)* %tmp89, i32 (...)** %tmp7, align 8
%tmp2.i = call i32 (...)* %tmp89( i32 zeroext 0 ) ; <i32> [#uses=1]
ret i32 %tmp2.i
}