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Change behavior of calling bitcasted alias functions.

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It will now only convert the arguments / return value and call
the underlying function if the types are able to be bitcasted.
This avoids using fp<->int conversions that would occur before.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187444 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Matt Arsenault
2013-07-30 20:45:05 +00:00
parent 80bec28b66
commit f34dc428fa
10 changed files with 430 additions and 83 deletions
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10
test/Transforms/InstCombine/call-cast-target.ll
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@@ -3,14 +3,12 @@
target datalayout = "e-p:32:32"
target triple = "i686-pc-linux-gnu"
; CHECK-NOT: bitcast
; CHECK: call
; CHECK-NOT: bitcast
define i32 @main() {
; CHECK-LABEL: @main
; CHECK: call i32 bitcast
entry:
%tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null ) ; <i32> [#uses=1]
ret i32 %tmp
%tmp = call i32 bitcast (i8* (i32*)* @ctime to i32 (i32*)*)( i32* null ) ; <i32> [#uses=1]
ret i32 %tmp
}
declare i8* @ctime(i32*)