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-rw-r--r--llvm/lib/Target/Mips/Mips64r6InstrInfo.td3
1 files changed, 3 insertions, 0 deletions
diff --git a/llvm/lib/Target/Mips/Mips64r6InstrInfo.td b/llvm/lib/Target/Mips/Mips64r6InstrInfo.td
index 9df802cc30b..ac223bc7725 100644
--- a/llvm/lib/Target/Mips/Mips64r6InstrInfo.td
+++ b/llvm/lib/Target/Mips/Mips64r6InstrInfo.td
@@ -301,6 +301,9 @@ def : MipsPat<(select (i32 (seteq i32:$cond, immz)), immz, i64:$f),
// Patterns used for matching away redundant sign extensions.
// MIPS32 arithmetic instructions sign extend their result implicitly.
+def : MipsPat<(i64 (sext (i32 (mul GPR32:$src, GPR32:$src2)))),
+ (INSERT_SUBREG (i64 (IMPLICIT_DEF)),
+ (MUL_R6 GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
def : MipsPat<(i64 (sext (i32 (sdiv GPR32:$src, GPR32:$src2)))),
(INSERT_SUBREG (i64 (IMPLICIT_DEF)),
(DIV GPR32:$src, GPR32:$src2), sub_32)>, ISA_MIPS64R6;
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