[mips] [IAS] Add support for the BNEZL and BEQZL pseudo-instructions.

Summary: They are of the form "bnezl/beqzl $rs, offset" and expand to "bnel/beql $rs, $zero, offset". These instructions are used in Linux inline assembly. Reviewers: dsanders Reviewed By: dsanders Subscribers: llvm-commits Differential Revision: http://reviews.llvm.org/D8540 llvm-svn: 234401
llvm · Apr 8, 2015 · 91fc0b3 · 91fc0b3
1 parent 7230f80
commit 91fc0b3
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diff --git a/llvm/lib/Target/Mips/MipsInstrInfo.td b/llvm/lib/Target/Mips/MipsInstrInfo.td
@@ -1594,8 +1594,12 @@ def : MipsInstAlias<"b $offset", (BEQ ZERO, ZERO, brtarget:$offset), 0>;
 }
 def : MipsInstAlias<"bnez $rs,$offset",
                     (BNE GPR32Opnd:$rs, ZERO, brtarget:$offset), 0>;
+def : MipsInstAlias<"bnezl $rs,$offset",
+                    (BNEL GPR32Opnd:$rs, ZERO, brtarget:$offset), 0>;
 def : MipsInstAlias<"beqz $rs,$offset",
                     (BEQ GPR32Opnd:$rs, ZERO, brtarget:$offset), 0>;
+def : MipsInstAlias<"beqzl $rs,$offset",
+                    (BEQL GPR32Opnd:$rs, ZERO, brtarget:$offset), 0>;
 def : MipsInstAlias<"syscall", (SYSCALL 0), 1>;
 
 def : MipsInstAlias<"break", (BREAK 0, 0), 1>;

diff --git a/llvm/test/MC/Mips/mips-jump-delay-slots.s b/llvm/test/MC/Mips/mips-jump-delay-slots.s
@@ -68,9 +68,15 @@
         # CHECK: beql $9, $6, 1332
         # CHECK-NOT: nop
         beql $9,$6,1332
+        # CHECK: beql $9, $zero, 1332
+        # CHECK-NOT: nop
+        beqzl $9,1332
         # CHECK: bnel $9, $6, 1332
         # CHECK-NOT: nop
         bnel $9,$6,1332
+        # CHECK: bnel $9, $zero, 1332
+        # CHECK-NOT: nop
+        bnezl $9,1332
         # CHECK: bgezl $6, 1332
         # CHECK-NOT: nop
         bgezl $6,1332