[llvm] b94e5ff - [RISCV][LSR] Precommit test coverage for an upcoming change
Philip Reames via llvm-commits
llvm-commits at lists.llvm.org
Fri Jan 20 08:22:37 PST 2023
Author: Philip Reames
Date: 2023-01-20T08:22:30-08:00
New Revision: b94e5ff2483a4d699f98ab1455faab746fd6ce4e
URL: https://github.com/llvm/llvm-project/commit/b94e5ff2483a4d699f98ab1455faab746fd6ce4e
DIFF: https://github.com/llvm/llvm-project/commit/b94e5ff2483a4d699f98ab1455faab746fd6ce4e.diff
LOG: [RISCV][LSR] Precommit test coverage for an upcoming change
Main point of these is to show the difference between a loop with and without a use outside the loop.
Added:
llvm/test/Transforms/LoopStrengthReduce/RISCV/lsr-cost-compare.ll
Modified:
Removed:
################################################################################
diff --git a/llvm/test/Transforms/LoopStrengthReduce/RISCV/lsr-cost-compare.ll b/llvm/test/Transforms/LoopStrengthReduce/RISCV/lsr-cost-compare.ll
new file mode 100644
index 0000000000000..7a78b8ea018c3
--- /dev/null
+++ b/llvm/test/Transforms/LoopStrengthReduce/RISCV/lsr-cost-compare.ll
@@ -0,0 +1,149 @@
+; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
+; RUN: opt < %s -loop-reduce -S | FileCheck %s
+
+target datalayout = "e-m:e-p:64:64-i64:64-i128:128-n64-S128"
+target triple = "riscv64"
+
+; a[] = 1.0
+define void @test1(ptr %a) {
+; CHECK-LABEL: @test1(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[LSR_IV1:%.*]] = phi ptr [ [[UGLYGEP:%.*]], [[LOOP]] ], [ [[A:%.*]], [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[LOOP]] ], [ 32000, [[ENTRY]] ]
+; CHECK-NEXT: store float 1.000000e+00, ptr [[LSR_IV1]], align 4
+; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], -1
+; CHECK-NEXT: [[UGLYGEP]] = getelementptr i8, ptr [[LSR_IV1]], i64 4
+; CHECK-NEXT: [[T21:%.*]] = icmp eq i64 [[LSR_IV_NEXT]], 0
+; CHECK-NEXT: br i1 [[T21]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %loop
+
+loop: ; preds = %loop, %entry
+ %t15 = phi i64 [ 0, %entry ], [ %t20, %loop ]
+ %t19 = getelementptr inbounds [32000 x float], ptr %a, i64 0, i64 %t15
+ store float 1.0, ptr %t19, align 4
+ %t20 = add nuw nsw i64 %t15, 1
+ %t21 = icmp eq i64 %t20, 32000
+ br i1 %t21, label %exit, label %loop
+
+exit: ; preds = %loop
+ ret void
+}
+
+; Same as test1, but with a use of a added outside the loop
+define void @test2(ptr %a) {
+; CHECK-LABEL: @test2(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 [[LSR_IV]]
+; CHECK-NEXT: store float 1.000000e+00, ptr [[UGLYGEP]], align 4
+; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i64 [[LSR_IV]], 4
+; CHECK-NEXT: [[T21:%.*]] = icmp eq i64 128000, [[LSR_IV_NEXT]]
+; CHECK-NEXT: br i1 [[T21]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: call void @use(ptr [[A]])
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %loop
+
+loop: ; preds = %loop, %entry
+ %t15 = phi i64 [ 0, %entry ], [ %t20, %loop ]
+ %t19 = getelementptr inbounds [32000 x float], ptr %a, i64 0, i64 %t15
+ store float 1.0, ptr %t19, align 4
+ %t20 = add nuw nsw i64 %t15, 1
+ %t21 = icmp eq i64 %t20, 32000
+ br i1 %t21, label %exit, label %loop
+
+exit: ; preds = %loop
+ call void @use(ptr %a)
+ ret void
+}
+
+; b[] = a[] + 1.0
+define void @test3(ptr %a, ptr %b) {
+; CHECK-LABEL: @test3(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[LSR_IV2:%.*]] = phi ptr [ [[UGLYGEP3:%.*]], [[LOOP]] ], [ [[A:%.*]], [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[LSR_IV1:%.*]] = phi ptr [ [[UGLYGEP:%.*]], [[LOOP]] ], [ [[B:%.*]], [[ENTRY]] ]
+; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[LOOP]] ], [ 32000, [[ENTRY]] ]
+; CHECK-NEXT: [[T17:%.*]] = load float, ptr [[LSR_IV2]], align 4
+; CHECK-NEXT: [[T18:%.*]] = fadd float [[T17]], 1.000000e+00
+; CHECK-NEXT: store float [[T18]], ptr [[LSR_IV1]], align 4
+; CHECK-NEXT: [[LSR_IV_NEXT]] = add nsw i64 [[LSR_IV]], -1
+; CHECK-NEXT: [[UGLYGEP]] = getelementptr i8, ptr [[LSR_IV1]], i64 4
+; CHECK-NEXT: [[UGLYGEP3]] = getelementptr i8, ptr [[LSR_IV2]], i64 4
+; CHECK-NEXT: [[T21:%.*]] = icmp eq i64 [[LSR_IV_NEXT]], 0
+; CHECK-NEXT: br i1 [[T21]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %loop
+
+loop: ; preds = %loop, %entry
+ %t15 = phi i64 [ 0, %entry ], [ %t20, %loop ]
+ %t16 = getelementptr inbounds [32000 x float], ptr %a, i64 0, i64 %t15
+ %t17 = load float, ptr %t16, align 4
+ %t18 = fadd float %t17, 1.000000e+00
+ %t19 = getelementptr inbounds [32000 x float], ptr %b, i64 0, i64 %t15
+ store float %t18, ptr %t19, align 4
+ %t20 = add nuw nsw i64 %t15, 1
+ %t21 = icmp eq i64 %t20, 32000
+ br i1 %t21, label %exit, label %loop
+
+exit: ; preds = %loop
+ ret void
+}
+
+; Same as test3, but with a use of both a and b outside the loop
+define void @test4(ptr %a, ptr %b) {
+; CHECK-LABEL: @test4(
+; CHECK-NEXT: entry:
+; CHECK-NEXT: br label [[LOOP:%.*]]
+; CHECK: loop:
+; CHECK-NEXT: [[LSR_IV:%.*]] = phi i64 [ [[LSR_IV_NEXT:%.*]], [[LOOP]] ], [ 0, [[ENTRY:%.*]] ]
+; CHECK-NEXT: [[UGLYGEP1:%.*]] = getelementptr i8, ptr [[A:%.*]], i64 [[LSR_IV]]
+; CHECK-NEXT: [[T17:%.*]] = load float, ptr [[UGLYGEP1]], align 4
+; CHECK-NEXT: [[T18:%.*]] = fadd float [[T17]], 1.000000e+00
+; CHECK-NEXT: [[UGLYGEP:%.*]] = getelementptr i8, ptr [[B:%.*]], i64 [[LSR_IV]]
+; CHECK-NEXT: store float [[T18]], ptr [[UGLYGEP]], align 4
+; CHECK-NEXT: [[LSR_IV_NEXT]] = add nuw nsw i64 [[LSR_IV]], 4
+; CHECK-NEXT: [[T21:%.*]] = icmp eq i64 128000, [[LSR_IV_NEXT]]
+; CHECK-NEXT: br i1 [[T21]], label [[EXIT:%.*]], label [[LOOP]]
+; CHECK: exit:
+; CHECK-NEXT: call void @use(ptr [[A]])
+; CHECK-NEXT: call void @use(ptr [[B]])
+; CHECK-NEXT: ret void
+;
+entry:
+ br label %loop
+
+loop: ; preds = %loop, %entry
+ %t15 = phi i64 [ 0, %entry ], [ %t20, %loop ]
+ %t16 = getelementptr inbounds [32000 x float], ptr %a, i64 0, i64 %t15
+ %t17 = load float, ptr %t16, align 4
+ %t18 = fadd float %t17, 1.000000e+00
+ %t19 = getelementptr inbounds [32000 x float], ptr %b, i64 0, i64 %t15
+ store float %t18, ptr %t19, align 4
+ %t20 = add nuw nsw i64 %t15, 1
+ %t21 = icmp eq i64 %t20, 32000
+ br i1 %t21, label %exit, label %loop
+
+exit: ; preds = %loop
+ call void @use(ptr %a)
+ call void @use(ptr %b)
+ ret void
+}
+
+declare void @use(ptr)
+
More information about the llvm-commits
mailing list