llvm-6502/test/Transforms/InstCombine/narrow.ll
Reid Spencer 737ec5130e For PR1043:
Bye, Bye Booly. Remove the use of the bool type from non-upgraded test
cases and from grep expressions. The parser doesn't accept it and the
asm writer doesn't produce it any more.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33183 91177308-0d34-0410-b5e6-96231b3b80d8
2007-01-13 05:06:52 +00:00

19 lines
643 B
LLVM

; This file contains various testcases that check to see that instcombine
; is narrowing computations when possible.
; RUN: llvm-upgrade < %s | llvm-as | opt -instcombine | llvm-dis | \
; RUN: grep 'ret i1 false'
; test1 - Eliminating the casts in this testcase (by narrowing the AND
; operation) allows instcombine to realize the function always returns false.
;
bool %test1(int %A, int %B) {
%C1 = setlt int %A, %B
%ELIM1 = zext bool %C1 to uint
%C2 = setgt int %A, %B
%ELIM2 = zext bool %C2 to uint
%C3 = and uint %ELIM1, %ELIM2
%ELIM3 = trunc uint %C3 to bool
ret bool %ELIM3
}