llvm-6502/test/CodeGen/AArch64/mul-lohi.ll
Kevin Qin 6739735812 Revert "r214832 - MachineCombiner Pass for selecting faster instruction"
It broke compiling of most Benchmark and internal test, as clang got
clashed by segmentation fault or assertion.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@214845 91177308-0d34-0410-b5e6-96231b3b80d8
2014-08-05 05:43:47 +00:00

20 lines
651 B
LLVM

; RUN: llc -mtriple=arm64-apple-ios7.0 %s -o - | FileCheck %s
; RUN: llc -mtriple=aarch64_be-linux-gnu %s -o - | FileCheck --check-prefix=CHECK-BE %s
define i128 @test_128bitmul(i128 %lhs, i128 %rhs) {
; CHECK-LABEL: test_128bitmul:
; CHECK-DAG: umulh [[CARRY:x[0-9]+]], x0, x2
; CHECK-DAG: madd [[PART1:x[0-9]+]], x0, x3, [[CARRY]]
; CHECK: madd x1, x1, x2, [[PART1]]
; CHECK: mul x0, x0, x2
; CHECK-BE-LABEL: test_128bitmul:
; CHECK-BE-DAG: umulh [[CARRY:x[0-9]+]], x1, x3
; CHECK-BE-DAG: madd [[PART1:x[0-9]+]], x1, x2, [[CARRY]]
; CHECK-BE: madd x0, x0, x3, [[PART1]]
; CHECK-BE: mul x1, x1, x3
%prod = mul i128 %lhs, %rhs
ret i128 %prod
}