[llvm] [X86] Lower scalar integer div/rem to FP division (PR #216589)

[Ankit Kumar Tiwari via llvm-commits]

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@@ -430,32 +430,48 @@ define <16 x i8> @test_divconstant_16i8(<16 x i8> %a) nounwind {
 define <4 x i32> @test_divv_4i32(<4 x i32> %a, <4 x i32> %b) nounwind {
 ; SSE2-LABEL: test_divv_4i32:
 ; SSE2:       # %bb.0:
-; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm0[3,3,3,3]
-; SSE2-NEXT:    movd %xmm2, %eax
 ; SSE2-NEXT:    pshufd {{.*#+}} xmm2 = xmm1[3,3,3,3]
-; SSE2-NEXT:    movd %xmm2, %ecx
-; SSE2-NEXT:    xorl %edx, %edx
-; SSE2-NEXT:    divl %ecx
-; SSE2-NEXT:    movd %eax, %xmm2
-; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[2,3,2,3]
+; SSE2-NEXT:    movd %xmm2, %eax
+; SSE2-NEXT:    xorps %xmm2, %xmm2
+; SSE2-NEXT:    cvtsi2sd %rax, %xmm2
+; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm0[3,3,3,3]
 ; SSE2-NEXT:    movd %xmm3, %eax
+; SSE2-NEXT:    xorps %xmm3, %xmm3
+; SSE2-NEXT:    cvtsi2sd %rax, %xmm3
+; SSE2-NEXT:    divsd %xmm2, %xmm3
+; SSE2-NEXT:    cvttsd2si %xmm3, %rax
+; SSE2-NEXT:    movd %eax, %xmm2
 ; SSE2-NEXT:    pshufd {{.*#+}} xmm3 = xmm1[2,3,2,3]
-; SSE2-NEXT:    movd %xmm3, %ecx
-; SSE2-NEXT:    xorl %edx, %edx
-; SSE2-NEXT:    divl %ecx
+; SSE2-NEXT:    movd %xmm3, %eax
+; SSE2-NEXT:    xorps %xmm3, %xmm3
+; SSE2-NEXT:    cvtsi2sd %rax, %xmm3
+; SSE2-NEXT:    pshufd {{.*#+}} xmm4 = xmm0[2,3,2,3]
+; SSE2-NEXT:    movd %xmm4, %eax
+; SSE2-NEXT:    xorps %xmm4, %xmm4
+; SSE2-NEXT:    cvtsi2sd %rax, %xmm4
+; SSE2-NEXT:    divsd %xmm3, %xmm4
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ankit-cybertron wrote:

Some other tests are failing too. Shall we update those

https://github.com/llvm/llvm-project/pull/216589