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[InstCombine] Added tests for PR41337 

llvm-svn: 357522
This commit is contained in:
David Bolvansky 2019-04-02 20:21:26 +00:00
parent 5ba60b22a4
commit 9f179b2c65
1 changed files with 53 additions and 0 deletions
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53
llvm/test/Transforms/InstCombine/ctpop-bswap-bitreverse.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt -instcombine -S < %s | FileCheck %s
define i32 @ctpop_bitreverse(i32 %x) {
; CHECK-LABEL: @ctpop_bitreverse(
; CHECK-NEXT: [[A:%.*]] = tail call i32 @llvm.bitreverse.i32(i32 [[X:%.*]])
; CHECK-NEXT: [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
; CHECK-NEXT: ret i32 [[B]]
;
%a = tail call i32 @llvm.bitreverse.i32(i32 %x)
%b = tail call i32 @llvm.ctpop.i32(i32 %a)
ret i32 %b
}
define <2 x i64> @ctpop_bitreverse_vec(<2 x i64> %x) {
; CHECK-LABEL: @ctpop_bitreverse_vec(
; CHECK-NEXT: [[A:%.*]] = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> [[X:%.*]])
; CHECK-NEXT: [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = tail call <2 x i64> @llvm.bitreverse.v2i64(<2 x i64> %x)
%b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
ret <2 x i64> %b
}
define i32 @ctpop_bswap(i32 %x) {
; CHECK-LABEL: @ctpop_bswap(
; CHECK-NEXT: [[A:%.*]] = tail call i32 @llvm.bswap.i32(i32 [[X:%.*]])
; CHECK-NEXT: [[B:%.*]] = tail call i32 @llvm.ctpop.i32(i32 [[A]]), !range !0
; CHECK-NEXT: ret i32 [[B]]
;
%a = tail call i32 @llvm.bswap.i32(i32 %x)
%b = tail call i32 @llvm.ctpop.i32(i32 %a)
ret i32 %b
}
define <2 x i64> @ctpop_bswap_vec(<2 x i64> %x) {
; CHECK-LABEL: @ctpop_bswap_vec(
; CHECK-NEXT: [[A:%.*]] = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> [[X:%.*]])
; CHECK-NEXT: [[B:%.*]] = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> [[A]])
; CHECK-NEXT: ret <2 x i64> [[B]]
;
%a = tail call <2 x i64> @llvm.bswap.v2i64(<2 x i64> %x)
%b = tail call <2 x i64> @llvm.ctpop.v2i64(<2 x i64> %a)
ret <2 x i64> %b
}
declare i32 @llvm.bitreverse.i32(i32)
declare <2 x i64> @llvm.bitreverse.v2i64(<2 x i64>)
declare i32 @llvm.bswap.i32(i32)
declare <2 x i64> @llvm.bswap.v2i64(<2 x i64>)
declare i32 @llvm.ctpop.i32(i32)
declare <2 x i64> @llvm.ctpop.v2i64(<2 x i64>)