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[x86] add cost model test for memcpy; NFC 

This is treated as a special-case in the base class
implementation of getIntrinsicInstrCost().
This commit is contained in:
Sanjay Patel 2020-10-13 10:55:06 -04:00
parent db1cf3d9ab
commit 1b94261e36
1 changed files with 23 additions and 0 deletions
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23
llvm/test/Analysis/CostModel/X86/intrinsic-cost-kinds.ll
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@ -29,6 +29,8 @@ declare <16 x float> @llvm.masked.gather.v16f32.v16p0f32(<16 x float*>, i32, <16
declare void @llvm.masked.scatter.v16f32.v16p0f32(<16 x float>, <16 x float*>, i32, <16 x i1>)
declare float @llvm.vector.reduce.fmax.v16f32(<16 x float>)
declare void @llvm.memcpy.p0i8.p0i8.i32(i8*, i8*, i32, i1)
define void @smax(i32 %a, i32 %b, <16 x i32> %va, <16 x i32> %vb) {
; THRU-LABEL: 'smax'
; THRU-NEXT: Cost Model: Found an estimated cost of 2 for instruction: %s = call i32 @llvm.smax.i32(i32 %a, i32 %b)
@ -221,3 +223,24 @@ define void @reduce_fmax(<16 x float> %va) {
%v = call float @llvm.vector.reduce.fmax.v16f32(<16 x float> %va)
ret void
}
define void @memcpy(i8* %a, i8* %b, i32 %c) {
; THRU-LABEL: 'memcpy'
; THRU-NEXT: Cost Model: Found an estimated cost of 1 for instruction: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %a, i8* align 1 %b, i32 32, i1 false)
; THRU-NEXT: Cost Model: Found an estimated cost of 0 for instruction: ret void
;
; LATE-LABEL: 'memcpy'
; LATE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %a, i8* align 1 %b, i32 32, i1 false)
; LATE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret void
;
; SIZE-LABEL: 'memcpy'
; SIZE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %a, i8* align 1 %b, i32 32, i1 false)
; SIZE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret void
;
; SIZE_LATE-LABEL: 'memcpy'
; SIZE_LATE-NEXT: Cost Model: Found an estimated cost of 4 for instruction: call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %a, i8* align 1 %b, i32 32, i1 false)
; SIZE_LATE-NEXT: Cost Model: Found an estimated cost of 1 for instruction: ret void
;
call void @llvm.memcpy.p0i8.p0i8.i32(i8* align 1 %a, i8* align 1 %b, i32 32, i1 false)
ret void
}