llvm/test/Transforms/InstCombine/2008-01-06-VoidCast.ll
Duncan Sands a9d0c9dc58 When transforming a call to a bitcast function into
a direct call with cast parameters and cast return
value (if any), instcombine was prepared to cast any
non-void return value into any other, whether castable
or not.  Add a new predicate for testing whether casting
is valid, and check it both for the return value and
(as a cleanup) for the parameters.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45657 91177308-0d34-0410-b5e6-96231b3b80d8
2008-01-06 10:12:28 +00:00

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229 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | not grep bitcast
define void @f(i16 %y) {
ret void
}
define i32 @g(i32 %y) {
%x = call i32 bitcast (void (i16)* @f to i32 (i32)*)( i32 %y ) ; <i32> [#uses=1]
ret i32 %x
}