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[X86] Remove mul(abs(x),abs(x)) -> mul(x,x) tests 

This is handled in InstCombine (D79319) and its unlikely that these can occur in DAG (see D79304).
This commit is contained in:
Simon Pilgrim 2020-05-09 15:07:15 +01:00
parent 0e8e731449
commit f4d4e246e0
1 changed files with 0 additions and 71 deletions
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71
llvm/test/CodeGen/X86/combine-mul.ll
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@ -283,77 +283,6 @@ define <4 x i32> @combine_vec_mul_add(<4 x i32> %x) {
ret <4 x i32> %2
}
; TODO fold mul(abs(x),abs(x)) -> mul(x,x)
define i31 @combine_mul_abs_i31(i31 %0) {
; SSE-LABEL: combine_mul_abs_i31:
; SSE: # %bb.0:
; SSE-NEXT: addl %edi, %edi
; SSE-NEXT: sarl %edi
; SSE-NEXT: movl %edi, %eax
; SSE-NEXT: negl %eax
; SSE-NEXT: cmovll %edi, %eax
; SSE-NEXT: imull %eax, %eax
; SSE-NEXT: retq
;
; AVX-LABEL: combine_mul_abs_i31:
; AVX: # %bb.0:
; AVX-NEXT: addl %edi, %edi
; AVX-NEXT: sarl %edi
; AVX-NEXT: movl %edi, %eax
; AVX-NEXT: negl %eax
; AVX-NEXT: cmovll %edi, %eax
; AVX-NEXT: imull %eax, %eax
; AVX-NEXT: retq
%c = icmp slt i31 %0, 0
%s = sub nsw i31 0, %0
%r = select i1 %c, i31 %s, i31 %0
%m = mul i31 %r, %r
ret i31 %m
}
define i32 @combine_mul_abs_i32(i32 %0) {
; SSE-LABEL: combine_mul_abs_i32:
; SSE: # %bb.0:
; SSE-NEXT: movl %edi, %eax
; SSE-NEXT: negl %eax
; SSE-NEXT: cmovll %edi, %eax
; SSE-NEXT: imull %eax, %eax
; SSE-NEXT: retq
;
; AVX-LABEL: combine_mul_abs_i32:
; AVX: # %bb.0:
; AVX-NEXT: movl %edi, %eax
; AVX-NEXT: negl %eax
; AVX-NEXT: cmovll %edi, %eax
; AVX-NEXT: imull %eax, %eax
; AVX-NEXT: retq
%c = icmp slt i32 %0, 0
%s = sub nsw i32 0, %0
%r = select i1 %c, i32 %s, i32 %0
%m = mul i32 %r, %r
ret i32 %m
}
define <4 x i32> @combine_mul_abs_v4i32(<4 x i32> %0) {
; SSE-LABEL: combine_mul_abs_v4i32:
; SSE: # %bb.0:
; SSE-NEXT: pabsd %xmm0, %xmm0
; SSE-NEXT: pmulld %xmm0, %xmm0
; SSE-NEXT: retq
;
; AVX-LABEL: combine_mul_abs_v4i32:
; AVX: # %bb.0:
; AVX-NEXT: vpabsd %xmm0, %xmm0
; AVX-NEXT: vpmulld %xmm0, %xmm0, %xmm0
; AVX-NEXT: retq
%c = icmp slt <4 x i32> %0, zeroinitializer
%s = sub nsw <4 x i32> zeroinitializer, %0
%r = select <4 x i1> %c, <4 x i32> %s, <4 x i32> %0
%m = mul <4 x i32> %r, %r
ret <4 x i32> %m
}
; TODO fold Y = sra (X, size(X)-1); mul (or (Y, 1), X) -> (abs X)
define <16 x i8> @combine_mul_to_abs_v16i8(<16 x i8> %x) {