#13415: Update left shift (#15538)

### Ticket #13415 ### Problem description Update left shift ### What's changed Updated file as mentioned in Issue #15514. ### Checklist - [x] [Post commit CI](https://github.com/tenstorrent/tt-metal/actions/runs/12074417574) passes - [x] [Blackhole post-commit tests](https://github.com/tenstorrent/tt-metal/actions/runs/12074418588) passes
tenstorrent · Dec 1, 2024 · 7b74c5b · 7b74c5b
1 parent 273a940
commit 7b74c5b
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Showing 2 changed files with 6 additions and 14 deletions.
diff --git a/tt_metal/hw/ckernels/blackhole/metal/llk_api/llk_sfpu/ckernel_sfpu_left_shift.h b/tt_metal/hw/ckernels/blackhole/metal/llk_api/llk_sfpu/ckernel_sfpu_left_shift.h
@@ -17,13 +17,9 @@ template <bool APPROXIMATION_MODE, int ITERATIONS = 8>
 inline void calculate_left_shift(const uint shift_amt) {
 #pragma GCC unroll 0
     for (int d = 0; d < ITERATIONS; d++) {
-        vInt val = dst_reg[0];
-        vInt v = val;
-
-        val = val << shift_amt;
-        val = setsgn(val, v);
-        dst_reg[0] = val;
-
+        TTI_SFPLOAD(0,12,ADDR_MOD_7,0);
+        TT_SFPSHFT(shift_amt,0,0,1);
+        TTI_SFPSTORE(0,12,ADDR_MOD_7,0);
         dst_reg++;
     }
 }

diff --git a/tt_metal/hw/ckernels/wormhole_b0/metal/llk_api/llk_sfpu/ckernel_sfpu_left_shift.h b/tt_metal/hw/ckernels/wormhole_b0/metal/llk_api/llk_sfpu/ckernel_sfpu_left_shift.h
@@ -17,13 +17,9 @@ template <bool APPROXIMATION_MODE, int ITERATIONS = 8>
 inline void calculate_left_shift(const uint shift_amt) {
 #pragma GCC unroll 0
     for (int d = 0; d < ITERATIONS; d++) {
-        vInt val = dst_reg[0];
-        vInt v = val;
-
-        val = val << shift_amt;
-        val = setsgn(val, v);
-        dst_reg[0] = val;
-
+        TTI_SFPLOAD(0,4,3,0);
+        TT_SFPSHFT(shift_amt,0,0,1);
+        TTI_SFPSTORE(0,4,3,0);
         dst_reg++;
     }
 }