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[ConstantFolding] add tests for funnel shift intrinsics; NFC

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llvm-svn: 339889
This commit is contained in:
Sanjay Patel 2018-08-16 16:10:42 +00:00
parent d799fa3740
commit cf78f22909
1 changed files with 89 additions and 0 deletions
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test/Analysis/ConstantFolding/funnel-shift.ll Normal file
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; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -constprop -S -o - | FileCheck %s
declare i32 @llvm.fshl.i32(i32, i32, i32)
declare i32 @llvm.fshr.i32(i32, i32, i32)
declare i7 @llvm.fshl.i7(i7, i7, i7)
declare i7 @llvm.fshr.i7(i7, i7, i7)
declare <4 x i8> @llvm.fshl.v4i8(<4 x i8>, <4 x i8>, <4 x i8>)
declare <4 x i8> @llvm.fshr.v4i8(<4 x i8>, <4 x i8>, <4 x i8>)
; extract(concat(0x12345678, 0xABCDEF01) << 5) = 0x468ACF15
define i32 @fshl_i32() {
; CHECK-LABEL: @fshl_i32(
; CHECK-NEXT: [[F:%.*]] = call i32 @llvm.fshl.i32(i32 305419896, i32 -1412567295, i32 5)
; CHECK-NEXT: ret i32 [[F]]
;
%f = call i32 @llvm.fshl.i32(i32 305419896, i32 2882400001, i32 5)
ret i32 %f
}
; extract(concat(0x12345678, 0xABCDEF01) >> 5) = 0xC55E6F78
; Try an oversized shift to test modulo functionality.
define i32 @fshr_i32() {
; CHECK-LABEL: @fshr_i32(
; CHECK-NEXT: [[F:%.*]] = call i32 @llvm.fshr.i32(i32 305419896, i32 -1412567295, i32 37)
; CHECK-NEXT: ret i32 [[F]]
;
%f = call i32 @llvm.fshr.i32(i32 305419896, i32 2882400001, i32 37)
ret i32 %f
}
; Use a weird type.
; Try an oversized shift to test modulo functionality.
; extract(concat(0b1110000, 0b1111111) << 2) = 0b1000011
define i7 @fshl_i7() {
; CHECK-LABEL: @fshl_i7(
; CHECK-NEXT: [[F:%.*]] = call i7 @llvm.fshl.i7(i7 -16, i7 -1, i7 9)
; CHECK-NEXT: ret i7 [[F]]
;
%f = call i7 @llvm.fshl.i7(i7 112, i7 127, i7 9)
ret i7 %f
}
; extract(concat(0b1110000, 0b1111111) >> 2) = 0b0011111
; Try an oversized shift to test modulo functionality.
define i7 @fshr_i7() {
; CHECK-LABEL: @fshr_i7(
; CHECK-NEXT: [[F:%.*]] = call i7 @llvm.fshr.i7(i7 -16, i7 -1, i7 16)
; CHECK-NEXT: ret i7 [[F]]
;
%f = call i7 @llvm.fshr.i7(i7 112, i7 127, i7 16)
ret i7 %f
}
; Vectors are folded by handling each scalar element individually, so this is the equivalent of 4 scalar tests:
; extract(concat(0x00, 0xFF) << 0) = 0x00
; extract(concat(0xFF, 0x00) << 0) = 0xFF
; extract(concat(0x10, 0x55) << 1) = 0x20
; extract(concat(0x11, 0xAA) << 2) = 0x46
define <4 x i8> @fshl_v4i8() {
; CHECK-LABEL: @fshl_v4i8(
; CHECK-NEXT: [[F:%.*]] = call <4 x i8> @llvm.fshl.v4i8(<4 x i8> <i8 0, i8 -1, i8 16, i8 17>, <4 x i8> <i8 -1, i8 0, i8 85, i8 -86>, <4 x i8> <i8 0, i8 8, i8 9, i8 10>)
; CHECK-NEXT: ret <4 x i8> [[F]]
;
%f = call <4 x i8> @llvm.fshl.v4i8(<4 x i8> <i8 0, i8 -1, i8 16, i8 17>, <4 x i8> <i8 -1, i8 0, i8 85, i8 170>, <4 x i8> <i8 0, i8 8, i8 9, i8 10>)
ret <4 x i8> %f
}
; Vectors are folded by handling each scalar element individually, so this is the equivalent of 4 scalar tests:
; extract(concat(0x00, 0xFF) >> 0) = 0xFF
; extract(concat(0xFF, 0x00) >> 0) = 0x00
; extract(concat(0x10, 0x55) >> 1) = 0x2A
; extract(concat(0x11, 0xAA) >> 2) = 0x6A
define <4 x i8> @fshr_v4i8() {
; CHECK-LABEL: @fshr_v4i8(
; CHECK-NEXT: [[F:%.*]] = call <4 x i8> @llvm.fshr.v4i8(<4 x i8> <i8 0, i8 -1, i8 16, i8 17>, <4 x i8> <i8 -1, i8 0, i8 85, i8 -86>, <4 x i8> <i8 0, i8 8, i8 9, i8 10>)
; CHECK-NEXT: ret <4 x i8> [[F]]
;
%f = call <4 x i8> @llvm.fshr.v4i8(<4 x i8> <i8 0, i8 -1, i8 16, i8 17>, <4 x i8> <i8 -1, i8 0, i8 85, i8 170>, <4 x i8> <i8 0, i8 8, i8 9, i8 10>)
ret <4 x i8> %f
}