1
0
mirror of https://github.com/RPCS3/llvm-mirror.git synced 2024-11-24 11:42:57 +01:00
llvm-mirror/test/Transforms/InstCombine/2008-07-10-CastSextBool.ll
Chris Lattner 16b8ae98c1 Fix folding of icmp's of i1 where the comparison is signed. The code
was using the algorithm for folding unsigned comparisons which is
completely wrong.  This has been broken since the signless types change.

llvm-svn: 53444
2008-07-11 04:20:58 +00:00

18 lines
363 B
LLVM

; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {%C = xor i1 %A, true}
; RUN: llvm-as < %s | opt -instcombine | llvm-dis | grep {ret i1 false}
; PR2539
define i1 @test1(i1 %A) {
%B = zext i1 %A to i32
%C = icmp slt i32 %B, 1
ret i1 %C
}
define i1 @test2(i1 zeroext %b) {
entry:
%cmptmp = icmp slt i1 %b, true ; <i1> [#uses=1]
ret i1 %cmptmp
}