replica
/
hanchenye-llvm-project
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

[InstCombine] add tests for rotate by constant using funnel intrinsics; NFC 

llvm-svn: 356337
This commit is contained in:
Sanjay Patel 2019-03-17 18:50:39 +00:00
parent e0b48a8015
commit a3a2f9424e
1 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
llvm/test/Transforms/InstCombine/fsh.ll
View File

@ -379,6 +379,42 @@ define <2 x i31> @fshl_only_op1_demanded_vec_nonsplat(<2 x i31> %x, <2 x i31> %y
ret <2 x i31> %r
}
define i32 @rotl_constant_shift_amount(i32 %x) {
; CHECK-LABEL: @rotl_constant_shift_amount(
; CHECK-NEXT: [[R:%.*]] = call i32 @llvm.fshl.i32(i32 [[X:%.*]], i32 [[X]], i32 1)
; CHECK-NEXT: ret i32 [[R]]
;
%r = call i32 @llvm.fshl.i32(i32 %x, i32 %x, i32 33)
ret i32 %r
}
define <2 x i31> @rotl_constant_shift_amount_vec(<2 x i31> %x) {
; CHECK-LABEL: @rotl_constant_shift_amount_vec(
; CHECK-NEXT: [[R:%.*]] = call <2 x i31> @llvm.fshl.v2i31(<2 x i31> [[X:%.*]], <2 x i31> [[X]], <2 x i31> <i31 1, i31 1>)
; CHECK-NEXT: ret <2 x i31> [[R]]
;
%r = call <2 x i31> @llvm.fshl.v2i31(<2 x i31> %x, <2 x i31> %x, <2 x i31> <i31 32, i31 -1>)
ret <2 x i31> %r
}
define i33 @rotr_constant_shift_amount(i33 %x) {
; CHECK-LABEL: @rotr_constant_shift_amount(
; CHECK-NEXT: [[R:%.*]] = call i33 @llvm.fshr.i33(i33 [[X:%.*]], i33 [[X]], i33 1)
; CHECK-NEXT: ret i33 [[R]]
;
%r = call i33 @llvm.fshr.i33(i33 %x, i33 %x, i33 34)
ret i33 %r
}
define <2 x i32> @rotr_constant_shift_amount_vec(<2 x i32> %x) {
; CHECK-LABEL: @rotr_constant_shift_amount_vec(
; CHECK-NEXT: [[R:%.*]] = call <2 x i32> @llvm.fshr.v2i32(<2 x i32> [[X:%.*]], <2 x i32> [[X]], <2 x i32> <i32 1, i32 31>)
; CHECK-NEXT: ret <2 x i32> [[R]]
;
%r = call <2 x i32> @llvm.fshr.v2i32(<2 x i32> %x, <2 x i32> %x, <2 x i32> <i32 33, i32 -1>)
ret <2 x i32> %r
}
; Demand bits from both operands -- cannot simplify.
define i32 @fshl_both_ops_demanded(i32 %x, i32 %y) {