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llvm-mirror/test/CodeGen/WebAssembly/divrem-constant.ll
Wouter van Oortmerssen c7f8ab2cc1 [WebAssembly] Added default stack-only instruction mode for MC.
Summary:
Made it convert from register to stack based instructions, and removed the registers.
Fixes to related code that was expecting register based instructions.
Added the correct testing flag to all tests, depending on what the
format they were expecting so far.
Translated one test to stack format as example: reg-stackify-stack.ll

tested:
llvm-lit -v `find test -name WebAssembly`
unittests/MC/*

Reviewers: dschuff, sunfish

Subscribers: sbc100, jgravelle-google, eraman, aheejin, llvm-commits, jfb

Differential Revision: https://reviews.llvm.org/D51241

llvm-svn: 340750
2018-08-27 15:45:51 +00:00

63 lines
1.2 KiB
LLVM

; RUN: llc < %s -asm-verbose=false -wasm-keep-registers | FileCheck %s
; Test that integer div and rem by constant are optimized appropriately.
target datalayout = "e-m:e-p:32:32-i64:64-n32:64-S128"
target triple = "wasm32-unknown-unknown"
; CHECK-LABEL: test_udiv_2:
; CHECK: i32.shr_u
define i32 @test_udiv_2(i32 %x) {
%t = udiv i32 %x, 2
ret i32 %t
}
; CHECK-LABEL: test_udiv_5:
; CHECK: i32.div_u
define i32 @test_udiv_5(i32 %x) {
%t = udiv i32 %x, 5
ret i32 %t
}
; CHECK-LABEL: test_sdiv_2:
; CHECK: i32.div_s
define i32 @test_sdiv_2(i32 %x) {
%t = sdiv i32 %x, 2
ret i32 %t
}
; CHECK-LABEL: test_sdiv_5:
; CHECK: i32.div_s
define i32 @test_sdiv_5(i32 %x) {
%t = sdiv i32 %x, 5
ret i32 %t
}
; CHECK-LABEL: test_urem_2:
; CHECK: i32.and
define i32 @test_urem_2(i32 %x) {
%t = urem i32 %x, 2
ret i32 %t
}
; CHECK-LABEL: test_urem_5:
; CHECK: i32.rem_u
define i32 @test_urem_5(i32 %x) {
%t = urem i32 %x, 5
ret i32 %t
}
; CHECK-LABEL: test_srem_2:
; CHECK: i32.rem_s
define i32 @test_srem_2(i32 %x) {
%t = srem i32 %x, 2
ret i32 %t
}
; CHECK-LABEL: test_srem_5:
; CHECK: i32.rem_s
define i32 @test_srem_5(i32 %x) {
%t = srem i32 %x, 5
ret i32 %t
}