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|
; RUN: llc -march=mips < %s | FileCheck %s -check-prefixes=ALL,MIPS
; RUN: llc -march=mips < %s -mattr=+micromips | FileCheck %s -check-prefixes=ALL,MM
; Test the patterns used for constant materialization.
; Constants generated using li16
define i32 @Li16LowBoundary() {
entry:
; ALL-LABEL: Li16LowBoundary:
; MIPS: addiu $2, $zero, -1
; MM: li16 $2, -1
; ALL-NOT: lui
; ALL-NOT: ori
; MIPS-NOT: li16
; MM-NOT: addiu
ret i32 -1
}
define i32 @Li16HighBoundary() {
entry:
; ALL-LABEL: Li16HighBoundary:
; MIPS: addiu $2, $zero, 126
; MM: li16 $2, 126
; ALL-NOT: lui
; ALL-NOT: ori
; MM-NOT: addiu
; MIPS-NOT: li16
ret i32 126
}
; Constants generated using addiu
define i32 @AddiuLowBoundary() {
entry:
; ALL-LABEL: AddiuLowBoundary:
; ALL: addiu $2, $zero, -32768
; ALL-NOT: lui
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 -32768
}
define i32 @AddiuZero() {
entry:
; ALL-LABEL: AddiuZero:
; MIPS: addiu $2, $zero, 0
; MM: li16 $2, 0
; ALL-NOT: lui
; ALL-NOT: ori
; MIPS-NOT: li16
; MM-NOT: addiu
ret i32 0
}
define i32 @AddiuHighBoundary() {
entry:
; ALL-LABEL: AddiuHighBoundary:
; ALL: addiu $2, $zero, 32767
; ALL-NOT: lui
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 32767
}
; Constants generated using ori
define i32 @OriLowBoundary() {
entry:
; ALL-LABEL: OriLowBoundary:
; ALL: ori $2, $zero, 32768
; ALL-NOT: addiu
; ALL-NOT: lui
; ALL-NOT: li16
ret i32 32768
}
define i32 @OriHighBoundary() {
entry:
; ALL-LABEL: OriHighBoundary:
; ALL: ori $2, $zero, 65535
; ALL-NOT: addiu
; ALL-NOT: lui
; ALL-NOT: li16
ret i32 65535
}
; Constants generated using lui
define i32 @LuiPositive() {
entry:
; ALL-LABEL: LuiPositive:
; ALL: lui $2, 1
; ALL-NOT: addiu
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 65536
}
define i32 @LuiNegative() {
entry:
; ALL-LABEL: LuiNegative:
; ALL: lui $2, 65535
; ALL-NOT: addiu
; ALL-NOT: ori
; ALL-NOT: li16
ret i32 -65536
}
; Constants generated using a combination of lui and ori
define i32 @LuiWithLowBitsSet() {
entry:
; ALL-LABEL: LuiWithLowBitsSet:
; ALL: lui $1, 1
; ALL: ori $2, $1, 1
; ALL-NOT: addiu
; ALL-NOT: li16
ret i32 65537
}
define i32 @BelowAddiuLowBoundary() {
entry:
; ALL-LABEL: BelowAddiuLowBoundary:
; ALL: lui $1, 65535
; ALL: ori $2, $1, 32767
; ALL-NOT: addiu
; ALL-NOT: li16
ret i32 -32769
}
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