30 lines
710 B
LLVM
30 lines
710 B
LLVM
; RUN: opt -S -instcombine < %s | FileCheck %s
|
|
|
|
define i1 @test1(i16* %x) {
|
|
%load = load i16* %x, align 4
|
|
%trunc = trunc i16 %load to i8
|
|
%cmp1 = icmp eq i8 %trunc, 127
|
|
%and = and i16 %load, -256
|
|
%cmp2 = icmp eq i16 %and, 17664
|
|
%or = and i1 %cmp1, %cmp2
|
|
ret i1 %or
|
|
; CHECK: @test1
|
|
; CHECK-NEXT: load i16
|
|
; CHECK-NEXT: icmp eq i16 %load, 17791
|
|
; CHECK-NEXT: ret i1
|
|
}
|
|
|
|
define i1 @test2(i16* %x) {
|
|
%load = load i16* %x, align 4
|
|
%and = and i16 %load, -256
|
|
%cmp1 = icmp eq i16 %and, 32512
|
|
%trunc = trunc i16 %load to i8
|
|
%cmp2 = icmp eq i8 %trunc, 69
|
|
%or = and i1 %cmp1, %cmp2
|
|
ret i1 %or
|
|
; CHECK: @test2
|
|
; CHECK-NEXT: load i16
|
|
; CHECK-NEXT: icmp eq i16 %load, 32581
|
|
; CHECK-NEXT: ret i1
|
|
}
|