Home | History | Annotate | Download | only in cstmaterialization 
      1 ; RUN: llc -march=mips < %s | FileCheck %s -check-prefixes=ALL,MIPS
      2 ; RUN: llc -march=mips < %s -mattr=+micromips | FileCheck %s -check-prefixes=ALL,MM
      3 
      4 ; Test the patterns used for constant materialization.
      5 
      6 ; Constants generated using li16
      7 define i32 @Li16LowBoundary() {
      8 entry:
      9   ; ALL-LABEL: Li16LowBoundary:
     10   ; MIPS:     addiu	$2, $zero, -1
     11   ; MM:       li16	$2, -1
     12   ; ALL-NOT:  lui
     13   ; ALL-NOT:  ori
     14   ; MIPS-NOT: li16
     15   ; MM-NOT:   addiu
     16 
     17   ret i32 -1
     18 }
     19 
     20 define i32 @Li16HighBoundary() {
     21 entry:
     22   ; ALL-LABEL: Li16HighBoundary:
     23   ; MIPS:     addiu	$2, $zero, 126
     24   ; MM:       li16	$2, 126
     25   ; ALL-NOT:  lui
     26   ; ALL-NOT:  ori
     27   ; MM-NOT:   addiu
     28   ; MIPS-NOT: li16
     29 
     30   ret i32 126
     31 }
     32 
     33 ; Constants generated using addiu
     34 define i32 @AddiuLowBoundary() {
     35 entry:
     36   ; ALL-LABEL: AddiuLowBoundary:
     37   ; ALL:      addiu	$2, $zero, -32768
     38   ; ALL-NOT:  lui
     39   ; ALL-NOT:  ori
     40   ; ALL-NOT:  li16
     41 
     42   ret i32 -32768
     43 }
     44 
     45 define i32 @AddiuZero() {
     46 entry:
     47   ; ALL-LABEL: AddiuZero:
     48   ; MIPS:     addiu	$2, $zero, 0
     49   ; MM:       li16	$2, 0
     50   ; ALL-NOT:  lui
     51   ; ALL-NOT:  ori
     52   ; MIPS-NOT: li16
     53   ; MM-NOT:   addiu
     54 
     55   ret i32 0
     56 }
     57 
     58 define i32 @AddiuHighBoundary() {
     59 entry:
     60   ; ALL-LABEL: AddiuHighBoundary:
     61   ; ALL:     addiu	$2, $zero, 32767
     62   ; ALL-NOT: lui
     63   ; ALL-NOT: ori
     64   ; ALL-NOT: li16
     65 
     66   ret i32 32767
     67 }
     68 
     69 ; Constants generated using ori
     70 define i32 @OriLowBoundary() {
     71 entry:
     72   ; ALL-LABEL: OriLowBoundary:
     73   ; ALL:     ori	$2, $zero, 32768
     74   ; ALL-NOT: addiu
     75   ; ALL-NOT: lui
     76   ; ALL-NOT: li16
     77 
     78   ret i32 32768
     79 }
     80 
     81 define i32 @OriHighBoundary() {
     82 entry:
     83   ; ALL-LABEL: OriHighBoundary:
     84   ; ALL:     ori	$2, $zero, 65535
     85   ; ALL-NOT: addiu
     86   ; ALL-NOT: lui
     87   ; ALL-NOT: li16
     88 
     89   ret i32 65535
     90 }
     91 
     92 ; Constants generated using lui
     93 define i32 @LuiPositive() {
     94 entry:
     95   ; ALL-LABEL: LuiPositive:
     96   ; ALL:     lui	$2, 1
     97   ; ALL-NOT: addiu
     98   ; ALL-NOT: ori
     99   ; ALL-NOT: li16
    100 
    101   ret i32 65536
    102 }
    103 
    104 define i32 @LuiNegative() {
    105 entry:
    106   ; ALL-LABEL: LuiNegative:
    107   ; ALL:     lui	$2, 65535
    108   ; ALL-NOT: addiu
    109   ; ALL-NOT: ori
    110   ; ALL-NOT: li16
    111 
    112   ret i32 -65536
    113 }
    114 
    115 ; Constants generated using a combination of lui and ori
    116 define i32 @LuiWithLowBitsSet() {
    117 entry:
    118   ; ALL-LABEL: LuiWithLowBitsSet:
    119   ; ALL:     lui	$1, 1
    120   ; ALL:     ori	$2, $1, 1
    121   ; ALL-NOT: addiu
    122   ; ALL-NOT: li16
    123 
    124   ret i32 65537
    125 }
    126 
    127 define i32 @BelowAddiuLowBoundary() {
    128 entry:
    129   ; ALL-LABEL: BelowAddiuLowBoundary:
    130   ; ALL:     lui	$1, 65535
    131   ; ALL:     ori	$2, $1, 32767
    132   ; ALL-NOT: addiu
    133   ; ALL-NOT: li16
    134 
    135   ret i32 -32769
    136 }
    137