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Test case for PR454

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@18301 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2004-11-28 04:29:29 +00:00
parent 8dde18fc50
commit d3938b14ea
1 changed files with 159 additions and 0 deletions
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test/Transforms/InstCombine/2004-11-27-SetCCForCastLargerAndConstant.ll Normal file
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; This test case tests the InstructionCombining optimization that
; reduces things like:
; %Y = cast sbyte %X to uint
; %C = setlt uint %Y, 1024
; to
; %C = bool true
; It includes test cases for different constant values, signedness of the
; cast operands, and types of setCC operators. In all cases, the cast should
; be eliminated. In many cases the setCC is also eliminated based on the
; constant value and the range of the casted value.
;
; RUN: llvm-as %s -o - | opt -instcombine -o - | llvm-dis -o - | grep -v cast
implementation ; Functions:
;
bool %lt_signed_to_large_unsigned(sbyte %SB) {
%Y = cast sbyte %SB to uint ; <uint> [#uses=1]
%C = setlt uint %Y, 1024 ; <bool> [#uses=1]
ret bool %C
}
bool %lt_signed_to_large_signed(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setlt int %Y, 1024
ret bool %C
}
bool %lt_signed_to_large_negative(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setlt int %Y, -1024
ret bool %C
}
bool %lt_signed_to_small_unsigned(sbyte %SB) {
%Y = cast sbyte %SB to uint ; <uint> [#uses=1]
%C = setlt uint %Y, 17 ; <bool> [#uses=1]
ret bool %C
}
bool %lt_signed_to_small_signed(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setlt int %Y, 17
ret bool %C
}
bool %lt_signed_to_small_negative(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setlt int %Y, -17
ret bool %C
}
bool %lt_unsigned_to_large_unsigned(ubyte %SB) {
%Y = cast ubyte %SB to uint ; <uint> [#uses=1]
%C = setlt uint %Y, 1024 ; <bool> [#uses=1]
ret bool %C
}
bool %lt_unsigned_to_large_signed(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setlt int %Y, 1024
ret bool %C
}
bool %lt_unsigned_to_large_negative(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setlt int %Y, -1024
ret bool %C
}
bool %lt_unsigned_to_small_unsigned(ubyte %SB) {
%Y = cast ubyte %SB to uint ; <uint> [#uses=1]
%C = setlt uint %Y, 17 ; <bool> [#uses=1]
ret bool %C
}
bool %lt_unsigned_to_small_signed(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setlt int %Y, 17
ret bool %C
}
bool %lt_unsigned_to_small_negative(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setlt int %Y, -17
ret bool %C
}
bool %gt_signed_to_large_unsigned(sbyte %SB) {
%Y = cast sbyte %SB to uint ; <uint> [#uses=1]
%C = setgt uint %Y, 1024 ; <bool> [#uses=1]
ret bool %C
}
bool %gt_signed_to_large_signed(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setgt int %Y, 1024
ret bool %C
}
bool %gt_signed_to_large_negative(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setgt int %Y, -1024
ret bool %C
}
bool %gt_signed_to_small_unsigned(sbyte %SB) {
%Y = cast sbyte %SB to uint ; <uint> [#uses=1]
%C = setgt uint %Y, 17 ; <bool> [#uses=1]
ret bool %C
}
bool %gt_signed_to_small_signed(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setgt int %Y, 17
ret bool %C
}
bool %gt_signed_to_small_negative(sbyte %SB) {
%Y = cast sbyte %SB to int
%C = setgt int %Y, -17
ret bool %C
}
bool %gt_unsigned_to_large_unsigned(ubyte %SB) {
%Y = cast ubyte %SB to uint ; <uint> [#uses=1]
%C = setgt uint %Y, 1024 ; <bool> [#uses=1]
ret bool %C
}
bool %gt_unsigned_to_large_signed(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setgt int %Y, 1024
ret bool %C
}
bool %gt_unsigned_to_large_negative(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setgt int %Y, -1024
ret bool %C
}
bool %gt_unsigned_to_small_unsigned(ubyte %SB) {
%Y = cast ubyte %SB to uint ; <uint> [#uses=1]
%C = setgt uint %Y, 17 ; <bool> [#uses=1]
ret bool %C
}
bool %gt_unsigned_to_small_signed(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setgt int %Y, 17
ret bool %C
}
bool %gt_unsigned_to_small_negative(ubyte %SB) {
%Y = cast ubyte %SB to int
%C = setgt int %Y, -17
ret bool %C
}