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[VectorCombine] Add multi-use shl test for D80885

This commit is contained in:
Simon Pilgrim 2020-06-03 19:41:56 +01:00
parent fd24bdbe50
commit c2e27ac1ce
1 changed files with 15 additions and 0 deletions
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15
llvm/test/Transforms/VectorCombine/X86/insert-binop-with-constant.ll
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@ -155,6 +155,21 @@ define <2 x i64> @shl_constant_op0_load(i64* %p) {
ret <2 x i64> %bo ret <2 x i64> %bo
} }
define <4 x i32> @shl_constant_op0_multiuse(i32 %a0, <4 x i32> %a1) {
; CHECK-LABEL: @shl_constant_op0_multiuse(
; CHECK-NEXT: [[INS:%.*]] = insertelement <4 x i32> <i32 undef, i32 1, i32 2, i32 3>, i32 [[A0:%.*]], i32 0
; CHECK-NEXT: [[MUL:%.*]] = shl <4 x i32> [[INS]], <i32 3, i32 4, i32 5, i32 6>
; CHECK-NEXT: [[AND:%.*]] = and <4 x i32> [[INS]], [[A1:%.*]]
; CHECK-NEXT: [[XOR:%.*]] = xor <4 x i32> [[AND]], [[MUL]]
; CHECK-NEXT: ret <4 x i32> [[XOR]]
;
%ins = insertelement <4 x i32> <i32 undef, i32 1, i32 2, i32 3>, i32 %a0, i32 0
%mul = shl <4 x i32> %ins, <i32 3, i32 4, i32 5, i32 6>
%and = and <4 x i32> %ins, %a1
%xor = xor <4 x i32> %and, %mul
ret <4 x i32> %xor
}
define <2 x i64> @shl_constant_op1(i64 %x) { define <2 x i64> @shl_constant_op1(i64 %x) {
; CHECK-LABEL: @shl_constant_op1( ; CHECK-LABEL: @shl_constant_op1(
; CHECK-NEXT: [[INS:%.*]] = insertelement <2 x i64> undef, i64 [[X:%.*]], i32 0 ; CHECK-NEXT: [[INS:%.*]] = insertelement <2 x i64> undef, i64 [[X:%.*]], i32 0