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[ARM] Extra qdadd patterns 

This adds some new qdadd patterns to go along with the other recently added
qadd's.

Differential Revision: https://reviews.llvm.org/D68999

llvm-svn: 375414
This commit is contained in:
David Green 2019-10-21 14:06:49 +00:00
parent c7a76d6bf0
commit 0765a4c288
3 changed files with 14 additions and 12 deletions
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4
llvm/lib/Target/ARM/ARMInstrInfo.td
View File

@ -3759,6 +3759,10 @@ def : ARMV5TEPat<(saddsat GPR:$a, GPR:$b),
(QADD GPR:$a, GPR:$b)>;
def : ARMV5TEPat<(ssubsat GPR:$a, GPR:$b),
(QSUB GPR:$a, GPR:$b)>;
def : ARMV5TEPat<(saddsat(saddsat rGPR:$Rm, rGPR:$Rm), rGPR:$Rn),
(QDADD rGPR:$Rm, rGPR:$Rn)>;
def : ARMV5TEPat<(ssubsat rGPR:$Rm, (saddsat rGPR:$Rn, rGPR:$Rn)),
(QDSUB rGPR:$Rm, rGPR:$Rn)>;
def : ARMV6Pat<(ARMqadd8b rGPR:$Rm, rGPR:$Rn),
(QADD8 rGPR:$Rm, rGPR:$Rn)>;
def : ARMV6Pat<(ARMqsub8b rGPR:$Rm, rGPR:$Rn),

4
llvm/lib/Target/ARM/ARMInstrThumb2.td
View File

@ -2399,6 +2399,10 @@ def : Thumb2DSPPat<(saddsat rGPR:$Rm, rGPR:$Rn),
(t2QADD rGPR:$Rm, rGPR:$Rn)>;
def : Thumb2DSPPat<(ssubsat rGPR:$Rm, rGPR:$Rn),
(t2QSUB rGPR:$Rm, rGPR:$Rn)>;
def : Thumb2DSPPat<(saddsat(saddsat rGPR:$Rm, rGPR:$Rm), rGPR:$Rn),
(t2QDADD rGPR:$Rm, rGPR:$Rn)>;
def : Thumb2DSPPat<(ssubsat rGPR:$Rm, (saddsat rGPR:$Rn, rGPR:$Rn)),
(t2QDSUB rGPR:$Rm, rGPR:$Rn)>;
def : Thumb2DSPPat<(ARMqadd8b rGPR:$Rm, rGPR:$Rn),
(t2QADD8 rGPR:$Rm, rGPR:$Rn)>;
def : Thumb2DSPPat<(ARMqsub8b rGPR:$Rm, rGPR:$Rn),

18
llvm/test/CodeGen/ARM/qdadd.ll
View File

@ -36,14 +36,12 @@ define i32 @qdadd(i32 %x, i32 %y) nounwind {
;
; CHECK-T2DSP-LABEL: qdadd:
; CHECK-T2DSP: @ %bb.0:
; CHECK-T2DSP-NEXT: qadd r0, r0, r0
; CHECK-T2DSP-NEXT: qadd r0, r0, r1
; CHECK-T2DSP-NEXT: qdadd r0, r0, r1
; CHECK-T2DSP-NEXT: bx lr
;
; CHECK-ARM-LABEL: qdadd:
; CHECK-ARM: @ %bb.0:
; CHECK-ARM-NEXT: qadd r0, r0, r0
; CHECK-ARM-NEXT: qadd r0, r0, r1
; CHECK-ARM-NEXT: qdadd r0, r0, r1
; CHECK-ARM-NEXT: bx lr
%z = call i32 @llvm.sadd.sat.i32(i32 %x, i32 %x)
%tmp = call i32 @llvm.sadd.sat.i32(i32 %z, i32 %y)
@ -82,14 +80,12 @@ define i32 @qdadd_c(i32 %x, i32 %y) nounwind {
;
; CHECK-T2DSP-LABEL: qdadd_c:
; CHECK-T2DSP: @ %bb.0:
; CHECK-T2DSP-NEXT: qadd r0, r0, r0
; CHECK-T2DSP-NEXT: qadd r0, r1, r0
; CHECK-T2DSP-NEXT: qdadd r0, r0, r1
; CHECK-T2DSP-NEXT: bx lr
;
; CHECK-ARM-LABEL: qdadd_c:
; CHECK-ARM: @ %bb.0:
; CHECK-ARM-NEXT: qadd r0, r0, r0
; CHECK-ARM-NEXT: qadd r0, r1, r0
; CHECK-ARM-NEXT: qdadd r0, r0, r1
; CHECK-ARM-NEXT: bx lr
%z = call i32 @llvm.sadd.sat.i32(i32 %x, i32 %x)
%tmp = call i32 @llvm.sadd.sat.i32(i32 %y, i32 %z)
@ -128,14 +124,12 @@ define i32 @qdsub(i32 %x, i32 %y) nounwind {
;
; CHECK-T2DSP-LABEL: qdsub:
; CHECK-T2DSP: @ %bb.0:
; CHECK-T2DSP-NEXT: qadd r0, r0, r0
; CHECK-T2DSP-NEXT: qsub r0, r1, r0
; CHECK-T2DSP-NEXT: qdsub r0, r1, r0
; CHECK-T2DSP-NEXT: bx lr
;
; CHECK-ARM-LABEL: qdsub:
; CHECK-ARM: @ %bb.0:
; CHECK-ARM-NEXT: qadd r0, r0, r0
; CHECK-ARM-NEXT: qsub r0, r1, r0
; CHECK-ARM-NEXT: qdsub r0, r1, r0
; CHECK-ARM-NEXT: bx lr
%z = call i32 @llvm.sadd.sat.i32(i32 %x, i32 %x)
%tmp = call i32 @llvm.ssub.sat.i32(i32 %y, i32 %z)