[GlobalISel][Mips] Global ISel for brcond

[darkbuck]

• Enable equivalent between brcond and G_BRCOND.
• Remove the manual selection of G_BRCOND in Mips. Revise test cases.

[llvmbot]

@llvm/pr-subscribers-llvm-globalisel

Author: None (darkbuck)

Changes

• So far, it's not used in in-tree targets.

---

Full diff: https://github.com/llvm/llvm-project/pull/81306.diff

1 Files Affected:

• (modified) llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td (+1)

diff --git a/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td b/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
index f792237203b431..6bc19421fb0169 100644
--- a/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
+++ b/llvm/include/llvm/Target/GlobalISel/SelectionDAGCompat.td
@@ -130,6 +130,7 @@ let IfConvergent = G_INTRINSIC_CONVERGENT_W_SIDE_EFFECTS in {
 }
 
 def : GINodeEquiv<G_BR, br>;
+def : GINodeEquiv<G_BRCOND, brcond>;
 def : GINodeEquiv<G_BSWAP, bswap>;
 def : GINodeEquiv<G_BITREVERSE, bitreverse>;
 def : GINodeEquiv<G_FSHL, fshl>;

[arsenm]

LGTM. Maybe should change the description to say this is moving it to tablegen instead of suggesting it's new support

[darkbuck]

LGTM. Maybe should change the description to say this is moving it to tablegen instead of suggesting it's new support

Revise the commit message following the suggestion. But, it seems spr land uses the one posted here and discards the local change. Learned that spr diff is required to if any change (including commit message) before spr land.