From d579048464395f68ce45507f1d10204db8b36ce0 Mon Sep 17 00:00:00 2001
From: Jan Vesely <jan.vesely@rutgers.edu>
Date: Mon, 13 Apr 2015 16:26:00 +0000
Subject: R600: Add carry and borrow instructions. Use them to implement
 UADDO/USUBO

v2: tighten the sub64 tests
v3: rename to CARRY/BORROW
v4: fixup test cmdline
    add known bits computation
    use sign extend instead of sub 0,x
    better add test
v5: remove redundant break
    move lowering to separate functions
    fix comments

Signed-off-by: Jan Vesely <jan.vesely@rutgers.edu>
Reviewers: arsenm
llvm-svn: 234759
---
 llvm/test/CodeGen/R600/add.ll | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'llvm/test/CodeGen/R600/add.ll')

diff --git a/llvm/test/CodeGen/R600/add.ll b/llvm/test/CodeGen/R600/add.ll
index 70271616796..655e75dbc1a 100644
--- a/llvm/test/CodeGen/R600/add.ll
+++ b/llvm/test/CodeGen/R600/add.ll
@@ -62,6 +62,7 @@ define void @test4(<4 x i32> addrspace(1)* %out, <4 x i32> addrspace(1)* %in) {
 ; EG: ADD_INT
 ; EG: ADD_INT
 ; EG: ADD_INT
+
 ; SI: s_add_i32
 ; SI: s_add_i32
 ; SI: s_add_i32
@@ -94,6 +95,7 @@ entry:
 ; EG: ADD_INT
 ; EG: ADD_INT
 ; EG: ADD_INT
+
 ; SI: s_add_i32
 ; SI: s_add_i32
 ; SI: s_add_i32
@@ -120,6 +122,14 @@ entry:
 ; FUNC-LABEL: {{^}}add64:
 ; SI: s_add_u32
 ; SI: s_addc_u32
+
+; EG: MEM_RAT_CACHELESS STORE_RAW [[LO:T[0-9]+\.[XYZW]]]
+; EG: MEM_RAT_CACHELESS STORE_RAW [[HI:T[0-9]+\.[XYZW]]]
+; EG-DAG: ADD_INT {{[* ]*}}[[LO]]
+; EG-DAG: ADDC_UINT
+; EG-DAG: ADD_INT
+; EG-DAG: ADD_INT {{[* ]*}}[[HI]]
+; EG-NOT: SUB
 define void @add64(i64 addrspace(1)* %out, i64 %a, i64 %b) {
 entry:
   %0 = add i64 %a, %b
@@ -134,6 +144,14 @@ entry:
 
 ; FUNC-LABEL: {{^}}add64_sgpr_vgpr:
 ; SI-NOT: v_addc_u32_e32 s
+
+; EG: MEM_RAT_CACHELESS STORE_RAW [[LO:T[0-9]+\.[XYZW]]]
+; EG: MEM_RAT_CACHELESS STORE_RAW [[HI:T[0-9]+\.[XYZW]]]
+; EG-DAG: ADD_INT {{[* ]*}}[[LO]]
+; EG-DAG: ADDC_UINT
+; EG-DAG: ADD_INT
+; EG-DAG: ADD_INT {{[* ]*}}[[HI]]
+; EG-NOT: SUB
 define void @add64_sgpr_vgpr(i64 addrspace(1)* %out, i64 %a, i64 addrspace(1)* %in) {
 entry:
   %0 = load i64, i64 addrspace(1)* %in
@@ -146,6 +164,14 @@ entry:
 ; FUNC-LABEL: {{^}}add64_in_branch:
 ; SI: s_add_u32
 ; SI: s_addc_u32
+
+; EG: MEM_RAT_CACHELESS STORE_RAW [[LO:T[0-9]+\.[XYZW]]]
+; EG: MEM_RAT_CACHELESS STORE_RAW [[HI:T[0-9]+\.[XYZW]]]
+; EG-DAG: ADD_INT {{[* ]*}}[[LO]]
+; EG-DAG: ADDC_UINT
+; EG-DAG: ADD_INT
+; EG-DAG: ADD_INT {{[* ]*}}[[HI]]
+; EG-NOT: SUB
 define void @add64_in_branch(i64 addrspace(1)* %out, i64 addrspace(1)* %in, i64 %a, i64 %b, i64 %c) {
 entry:
   %0 = icmp eq i64 %a, 0
-- 
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