[llvm] r340242 - [LICM] More tests for D50925 [NFC]

[Philip Reames via llvm-commits]

Author: reames
Date: Mon Aug 20 17:14:14 2018
New Revision: 340242

URL: http://llvm.org/viewvc/llvm-project?rev=340242&view=rev
Log:
[LICM] More tests for D50925 [NFC]

This time, the corresponding cases where we can hoist (store-like) calls out of loops.


Added:
    llvm/trunk/test/Transforms/LICM/call-hoisting.ll

Added: llvm/trunk/test/Transforms/LICM/call-hoisting.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/Transforms/LICM/call-hoisting.ll?rev=340242&view=auto
==============================================================================
--- llvm/trunk/test/Transforms/LICM/call-hoisting.ll (added)
+++ llvm/trunk/test/Transforms/LICM/call-hoisting.ll Mon Aug 20 17:14:14 2018
@@ -0,0 +1,238 @@
+; RUN: opt -S -basicaa -licm %s | FileCheck %s
+; RUN: opt -aa-pipeline=basic-aa -passes='require<aa>,require<targetir>,require<scalar-evolution>,require<opt-remark-emit>,loop(licm)' < %s -S | FileCheck %s
+
+declare i32 @load(i32* %p) argmemonly readonly
+
+define void @test_load(i32* %loc) {
+; CHECK-LABEL: @test_load
+; CHECK-LABEL: loop:
+; CHECK: call i32 @load
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call i32 @load(i32* %loc)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+
+declare void @store(i32 %val, i32* %p) argmemonly writeonly
+
+define void @test(i32* %loc) {
+; CHECK-LABEL: @test
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @store(i32 0, i32* %loc)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @test_multiexit(i32* %loc, i1 %earlycnd) {
+; CHECK-LABEL: @test_multiexit
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: backedge:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %backedge]
+  call void @store(i32 0, i32* %loc)
+  %iv.next = add i32 %iv, 1
+  br i1 %earlycnd, label %exit1, label %backedge
+  
+backedge:
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit2
+
+exit1:
+  ret void
+exit2:
+  ret void
+}
+
+define void @neg_lv_value(i32* %loc) {
+; CHECK-LABEL: @neg_lv_value
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @store(i32 %iv, i32* %loc)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @neg_lv_addr(i32* %loc) {
+; CHECK-LABEL: @neg_lv_addr
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  %p = getelementptr i32, i32* %loc, i32 %iv
+  call void @store(i32 0, i32* %p)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @neg_mod(i32* %loc) {
+; CHECK-LABEL: @neg_mod
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @store(i32 0, i32* %loc)
+  store i32 %iv, i32* %loc
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @neg_ref(i32* %loc) {
+; CHECK-LABEL: @neg_ref
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit1:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %backedge]
+  call void @store(i32 0, i32* %loc)
+  %v = load i32, i32* %loc
+  %earlycnd = icmp eq i32 %v, 198
+  br i1 %earlycnd, label %exit1, label %backedge
+  
+backedge:
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit2
+
+exit1:
+  ret void
+exit2:
+  ret void
+}
+
+declare void @modref()
+
+define void @neg_modref(i32* %loc) {
+; CHECK-LABEL: @neg_modref
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @store(i32 0, i32* %loc)
+  call void @modref()
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @neg_fence(i32* %loc) {
+; CHECK-LABEL: @neg_fence
+; CHECK-LABEL: loop:
+; CHECK: call void @store
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @store(i32 0, i32* %loc)
+  fence seq_cst
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+declare void @not_argmemonly(i32 %v, i32* %p) writeonly
+declare void @not_writeonly(i32 %v, i32* %p) argmemonly
+
+define void @neg_not_argmemonly(i32* %loc) {
+; CHECK-LABEL: @neg_not_argmemonly
+; CHECK-LABEL: loop:
+; CHECK: call void @not_argmemonly
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @not_argmemonly(i32 0, i32* %loc)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+
+define void @neg_not_writeonly(i32* %loc) {
+; CHECK-LABEL: @neg_not_writeonly
+; CHECK-LABEL: loop:
+; CHECK: call void @not_writeonly
+; CHECK-LABEL: exit:
+entry:
+  br label %loop
+
+loop:
+  %iv = phi i32 [0, %entry], [%iv.next, %loop]
+  call void @not_writeonly(i32 0, i32* %loc)
+  %iv.next = add i32 %iv, 1
+  %cmp = icmp slt i32 %iv, 200
+  br i1 %cmp, label %loop, label %exit
+
+exit:
+  ret void
+}
+