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llvm-project/llvm/test/Transforms/InstCombine/apint-call-cast-target.ll

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Convert tests to FileCheck llvm-svn: 185124
2013-06-28 09:29:35 +08:00
; RUN: opt < %s -instcombine -S | FileCheck %s
Add test case for testing InstCombine with arbitrary precision integer types. These tests mimic the integer test cases in the normal InstCombine test suite but use "strange" integer bit widths. Most tests written by Zhou Sheng, a few by me. llvm-svn: 35284
2007-03-24 04:48:34 +08:00
target datalayout = "e-p:32:32"
target triple = "i686-pc-linux-gnu"
define i32 @main() {
Change behavior of calling bitcasted alias functions. 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. llvm-svn: 187444
2013-07-31 04:45:05 +08:00
; CHECK-LABEL: @main(
InstCombine: Bitcast call arguments from/to pointer/integer type Try harder to get rid of bitcast'd calls by ptrtoint/inttoptr'ing arguments and return values when DataLayout says it is safe to do so. llvm-svn: 225254
2015-01-06 16:41:31 +08:00
; CHECK: %[[call:.*]] = call i7* @ctime(i999* null)
; CHECK: %[[cast:.*]] = ptrtoint i7* %[[call]] to i32
; CHECK: ret i32 %[[cast]]
Add test case for testing InstCombine with arbitrary precision integer types. These tests mimic the integer test cases in the normal InstCombine test suite but use "strange" integer bit widths. Most tests written by Zhou Sheng, a few by me. llvm-svn: 35284
2007-03-24 04:48:34 +08:00
entry:
%tmp = call i32 bitcast (i7* (i999*)* @ctime to i32 (i99*)*)( i99* null )
ret i32 %tmp
}
When simplifying a call to a bitcast function, tighten up the conditions for performing the transform when only the function declaration is available: no longer allow turning i32 into i64 for example. Only allow changing between pointer types, and between pointer types and integers of the same size. For return values ptr -> intptr was already allowed; I added ptr -> ptr and intptr -> ptr while there. As shown by a recent objc testcase, changing the way parameters/return values are passed can be fatal when calling code written in assembler that directly manipulates call arguments and return values unless the transform has no impact on the way they are passed at the codegen level. While it is possible to imagine an ABI that treats integers of pointer size differently to pointers, I don't think LLVM supports any so the transform should now be safe while still being useful. llvm-svn: 51834
2008-06-01 15:38:42 +08:00
define i7* @ctime(i999*) {
InstCombine: Bitcast call arguments from/to pointer/integer type Try harder to get rid of bitcast'd calls by ptrtoint/inttoptr'ing arguments and return values when DataLayout says it is safe to do so. llvm-svn: 225254
2015-01-06 16:41:31 +08:00
; CHECK-LABEL: define i7* @ctime(
; CHECK: %[[call:.*]] = call i32 @main()
; CHECK: %[[cast:.*]] = inttoptr i32 %[[call]] to i7*
When simplifying a call to a bitcast function, tighten up the conditions for performing the transform when only the function declaration is available: no longer allow turning i32 into i64 for example. Only allow changing between pointer types, and between pointer types and integers of the same size. For return values ptr -> intptr was already allowed; I added ptr -> ptr and intptr -> ptr while there. As shown by a recent objc testcase, changing the way parameters/return values are passed can be fatal when calling code written in assembler that directly manipulates call arguments and return values unless the transform has no impact on the way they are passed at the codegen level. While it is possible to imagine an ABI that treats integers of pointer size differently to pointers, I don't think LLVM supports any so the transform should now be safe while still being useful. llvm-svn: 51834
2008-06-01 15:38:42 +08:00
entry:
%tmp = call i7* bitcast (i32 ()* @main to i7* ()*)( )
ret i7* %tmp
}