[llvm] [LoongArch] Adds support for vectors in OptWInstrs (PR #118935)
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Thu Dec 5 23:16:22 PST 2024
llvmbot wrote:
<!--LLVM PR SUMMARY COMMENT-->
@llvm/pr-subscribers-backend-loongarch
Author: hev (heiher)
<details>
<summary>Changes</summary>
---
Full diff: https://github.com/llvm/llvm-project/pull/118935.diff
2 Files Affected:
- (modified) llvm/lib/Target/LoongArch/LoongArchOptWInstrs.cpp (+29-2)
- (modified) llvm/test/CodeGen/LoongArch/sextw-removal.ll (-1)
``````````diff
diff --git a/llvm/lib/Target/LoongArch/LoongArchOptWInstrs.cpp b/llvm/lib/Target/LoongArch/LoongArchOptWInstrs.cpp
index ab90409fdf47d0..73e8be0f9522af 100644
--- a/llvm/lib/Target/LoongArch/LoongArchOptWInstrs.cpp
+++ b/llvm/lib/Target/LoongArch/LoongArchOptWInstrs.cpp
@@ -126,7 +126,6 @@ static bool hasAllNBitUsers(const MachineInstr &OrigMI,
switch (UserMI->getOpcode()) {
default:
- // TODO: Add vector
return false;
case LoongArch::ADD_W:
@@ -167,18 +166,45 @@ static bool hasAllNBitUsers(const MachineInstr &OrigMI,
case LoongArch::MOVGR2FCSR:
case LoongArch::MOVGR2FRH_W:
case LoongArch::MOVGR2FR_W_64:
+ case LoongArch::VINSGR2VR_W:
+ case LoongArch::XVINSGR2VR_W:
+ case LoongArch::VREPLGR2VR_W:
+ case LoongArch::XVREPLGR2VR_W:
if (Bits >= 32)
break;
return false;
case LoongArch::MOVGR2CF:
+ case LoongArch::VREPLVE_D:
+ case LoongArch::XVREPLVE_D:
if (Bits >= 1)
break;
return false;
+ case LoongArch::VREPLVE_W:
+ case LoongArch::XVREPLVE_W:
+ if (Bits >= 2)
+ break;
+ return false;
+ case LoongArch::VREPLVE_H:
+ case LoongArch::XVREPLVE_H:
+ if (Bits >= 3)
+ break;
+ return false;
+ case LoongArch::VREPLVE_B:
+ case LoongArch::XVREPLVE_B:
+ if (Bits >= 4)
+ break;
+ return false;
case LoongArch::EXT_W_B:
+ case LoongArch::VINSGR2VR_B:
+ case LoongArch::VREPLGR2VR_B:
+ case LoongArch::XVREPLGR2VR_B:
if (Bits >= 8)
break;
return false;
case LoongArch::EXT_W_H:
+ case LoongArch::VINSGR2VR_H:
+ case LoongArch::VREPLGR2VR_H:
+ case LoongArch::XVREPLGR2VR_H:
if (Bits >= 16)
break;
return false;
@@ -431,7 +457,8 @@ static bool isSignExtendingOpW(const MachineInstr &MI,
case LoongArch::MOVCF2GR:
case LoongArch::MOVFRH2GR_S:
case LoongArch::MOVFR2GR_S_64:
- // TODO: Add vector
+ case LoongArch::VPICKVE2GR_W:
+ case LoongArch::XVPICKVE2GR_W:
return true;
// Special cases that require checking operands.
// shifting right sufficiently makes the value 32-bit sign-extended
diff --git a/llvm/test/CodeGen/LoongArch/sextw-removal.ll b/llvm/test/CodeGen/LoongArch/sextw-removal.ll
index 0aeafadb9325b8..c625f2db4d2e89 100644
--- a/llvm/test/CodeGen/LoongArch/sextw-removal.ll
+++ b/llvm/test/CodeGen/LoongArch/sextw-removal.ll
@@ -1322,7 +1322,6 @@ define signext i32 @test20(<4 x i32> %v) {
; CHECK-LABEL: test20:
; CHECK: # %bb.0: # %entry
; CHECK-NEXT: vpickve2gr.w $a0, $vr0, 3
-; CHECK-NEXT: addi.w $a0, $a0, 0
; CHECK-NEXT: ret
;
; NORMV-LABEL: test20:
``````````
</details>
https://github.com/llvm/llvm-project/pull/118935
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