1
0
mirror of https://github.com/c64scene-ar/llvm-6502.git synced 2024-12-24 06:30:19 +00:00
llvm-6502/test/CodeGen/X86/2010-07-29-SetccSimplify.ll
Eli Friedman ad78a88711 Fix for bug reported by Evzen Muller on llvm-commits: make sure to correctly
check the range of the constant when optimizing a comparison between a
constant and a sign_extend_inreg node.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@109854 91177308-0d34-0410-b5e6-96231b3b80d8
2010-07-30 06:44:31 +00:00

15 lines
459 B
LLVM

; RUN: llc < %s -mtriple=x86_64-apple-darwin | FileCheck %s
define i32 @extend2bit_v2(i32 %val) {
entry:
%0 = trunc i32 %val to i2 ; <i2> [#uses=1]
%1 = sext i2 %0 to i32 ; <i32> [#uses=1]
%2 = icmp eq i32 %1, 3 ; <i1> [#uses=1]
%3 = zext i1 %2 to i32 ; <i32> [#uses=1]
ret i32 %3
}
; CHECK: extend2bit_v2:
; CHECK: xorl %eax, %eax
; CHECK-NEXT: ret