mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-18 12:29:21 +00:00
832254e1c2
This feature is needed in order to support shifts of more than 255 bits on large integer types. This changes the syntax for llvm assembly to make shl, ashr and lshr instructions look like a binary operator: shl i32 %X, 1 instead of shl i32 %X, i8 1 Additionally, this should help a few passes perform additional optimizations. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33776 91177308-0d34-0410-b5e6-96231b3b80d8
30 lines
869 B
LLVM
30 lines
869 B
LLVM
; These tests should not contain a sign extend.
|
|
; RUN: llvm-as < %s | llc -march=ppc32 &&
|
|
; RUN: llvm-as < %s | llc -march=ppc32 | not grep extsh &&
|
|
; RUN: llvm-as < %s | llc -march=ppc32 | not grep extsb
|
|
|
|
define i32 @test1(i32 %mode.0.i.0) {
|
|
%tmp.79 = trunc i32 %mode.0.i.0 to i16
|
|
%tmp.80 = sext i16 %tmp.79 to i32
|
|
%tmp.81 = and i32 %tmp.80, 24
|
|
ret i32 %tmp.81
|
|
}
|
|
|
|
define i16 @test2(i16 sext %X, i16 sext %x) sext {
|
|
%tmp = sext i16 %X to i32
|
|
%tmp1 = sext i16 %x to i32
|
|
%tmp2 = add i32 %tmp, %tmp1
|
|
%tmp4 = ashr i32 %tmp2, 1
|
|
%tmp5 = trunc i32 %tmp4 to i16
|
|
%tmp45 = sext i16 %tmp5 to i32
|
|
%retval = trunc i32 %tmp45 to i16
|
|
ret i16 %retval
|
|
}
|
|
|
|
define i16 @test3(i32 zext %X) sext {
|
|
%tmp1 = lshr i32 %X, 16
|
|
%tmp2 = trunc i32 %tmp1 to i16
|
|
ret i16 %tmp2
|
|
}
|
|
|