Sanjay Patel ee34d9b210 [InstCombine] use redirect of input file in regression tests; NFC
This is a repeat of 1880092722 from 2009. We should have less risk
of hitting bugs at this point because we auto-generate positive CHECK
lines only, but this makes things consistent.

Copying the original commit msg:
"Change tests from "opt %s" to "opt < %s" so that opt doesn't see the
input filename so that opt doesn't print the input filename in the
output so that grep lines in the tests don't unintentionally match
strings in the input filename."
2020-09-29 11:06:25 -04:00

37 lines
1.4 KiB
LLVM

; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
; RUN: opt < %s -instcombine -S | FileCheck %s
@wyhash64_x = global i64 0, align 8
define i64 @_Z8wyhash64v() {
; CHECK-LABEL: @_Z8wyhash64v(
; CHECK-NEXT: [[TMP1:%.*]] = load i64, i64* @wyhash64_x, align 8
; CHECK-NEXT: [[TMP2:%.*]] = add i64 [[TMP1]], 6971258582664805397
; CHECK-NEXT: store i64 [[TMP2]], i64* @wyhash64_x, align 8
; CHECK-NEXT: [[TMP3:%.*]] = zext i64 [[TMP2]] to i128
; CHECK-NEXT: [[TMP4:%.*]] = mul nuw i128 [[TMP3]], 11795372955171141389
; CHECK-NEXT: [[TMP5:%.*]] = lshr i128 [[TMP4]], 64
; CHECK-NEXT: [[DOTMASKED:%.*]] = and i128 [[TMP4]], 18446744073709551615
; CHECK-NEXT: [[TMP6:%.*]] = xor i128 [[TMP5]], [[DOTMASKED]]
; CHECK-NEXT: [[TMP7:%.*]] = mul nuw nsw i128 [[TMP6]], 1946526487930394057
; CHECK-NEXT: [[TMP8:%.*]] = lshr i128 [[TMP7]], 64
; CHECK-NEXT: [[TMP9:%.*]] = xor i128 [[TMP8]], [[TMP7]]
; CHECK-NEXT: [[TMP10:%.*]] = trunc i128 [[TMP9]] to i64
; CHECK-NEXT: ret i64 [[TMP10]]
;
%1 = load i64, i64* @wyhash64_x, align 8
%2 = add i64 %1, 6971258582664805397
store i64 %2, i64* @wyhash64_x, align 8
%3 = zext i64 %2 to i128
%4 = mul i128 %3, 11795372955171141389
%5 = lshr i128 %4, 64
%6 = xor i128 %5, %4
%7 = trunc i128 %6 to i64
%8 = zext i64 %7 to i128
%9 = mul i128 %8, 1946526487930394057
%10 = lshr i128 %9, 64
%11 = xor i128 %10, %9
%12 = trunc i128 %11 to i64
ret i64 %12
}