diff --git a/llvm/test/Transforms/IndVarSimplify/X86/widening-vs-and-elimination.ll b/llvm/test/Transforms/IndVarSimplify/X86/widening-vs-and-elimination.ll new file mode 100644 index 00000000000000..9b8ef313a3c5e8 --- /dev/null +++ b/llvm/test/Transforms/IndVarSimplify/X86/widening-vs-and-elimination.ll @@ -0,0 +1,68 @@ +; NOTE: Assertions have been autogenerated by utils/update_test_checks.py +; RUN: opt -S -passes=indvars < %s | FileCheck %s --check-prefixes=WIDENING_ON +; RUN: opt -S -passes=indvars -indvars-widen-indvars=false < %s | FileCheck %s --check-prefixes=WIDENING_OFF + +target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128-ni:1-p2:32:8:8:32-ni:2" +target triple = "x86_64-unknown-linux-gnu" + +define void @test(ptr %p1, ptr %p2) { +; WIDENING_ON-LABEL: @test( +; WIDENING_ON-NEXT: bb: +; WIDENING_ON-NEXT: [[VAR:%.*]] = load atomic i32, ptr [[P1:%.*]] unordered, align 8 +; WIDENING_ON-NEXT: [[VAR1:%.*]] = load atomic i32, ptr [[P2:%.*]] unordered, align 8 +; WIDENING_ON-NEXT: [[TMP0:%.*]] = zext i32 [[VAR]] to i64 +; WIDENING_ON-NEXT: br label [[BB2:%.*]] +; WIDENING_ON: bb2: +; WIDENING_ON-NEXT: [[INDVARS_IV:%.*]] = phi i64 [ [[INDVARS_IV_NEXT:%.*]], [[BB8:%.*]] ], [ [[TMP0]], [[BB:%.*]] ] +; WIDENING_ON-NEXT: [[TMP1:%.*]] = add nsw i64 [[INDVARS_IV]], -1 +; WIDENING_ON-NEXT: [[INDVARS_IV_NEXT]] = add nsw i64 [[INDVARS_IV]], -1 +; WIDENING_ON-NEXT: [[VAR5:%.*]] = icmp ne i64 [[INDVARS_IV]], 0 +; WIDENING_ON-NEXT: [[TMP2:%.*]] = zext i32 [[VAR1]] to i64 +; WIDENING_ON-NEXT: [[VAR6_WIDE:%.*]] = icmp ult i64 [[TMP1]], [[TMP2]] +; WIDENING_ON-NEXT: [[VAR7:%.*]] = and i1 [[VAR5]], [[VAR6_WIDE]] +; WIDENING_ON-NEXT: br i1 [[VAR7]], label [[BB8]], label [[BB11:%.*]] +; WIDENING_ON: bb8: +; WIDENING_ON-NEXT: br label [[BB2]] +; WIDENING_ON: bb11: +; WIDENING_ON-NEXT: ret void +; +; WIDENING_OFF-LABEL: @test( +; WIDENING_OFF-NEXT: bb: +; WIDENING_OFF-NEXT: [[VAR:%.*]] = load atomic i32, ptr [[P1:%.*]] unordered, align 8 +; WIDENING_OFF-NEXT: [[VAR1:%.*]] = load atomic i32, ptr [[P2:%.*]] unordered, align 8 +; WIDENING_OFF-NEXT: br label [[BB2:%.*]] +; WIDENING_OFF: bb2: +; WIDENING_OFF-NEXT: [[VAR3:%.*]] = phi i32 [ [[VAR4:%.*]], [[BB8:%.*]] ], [ [[VAR]], [[BB:%.*]] ] +; WIDENING_OFF-NEXT: [[VAR4]] = add i32 [[VAR3]], -1 +; WIDENING_OFF-NEXT: [[VAR5:%.*]] = icmp ne i32 [[VAR3]], 0 +; WIDENING_OFF-NEXT: [[VAR6:%.*]] = icmp ult i32 [[VAR4]], [[VAR1]] +; WIDENING_OFF-NEXT: [[VAR7:%.*]] = and i1 [[VAR5]], [[VAR6]] +; WIDENING_OFF-NEXT: br i1 [[VAR7]], label [[BB8]], label [[BB11:%.*]] +; WIDENING_OFF: bb8: +; WIDENING_OFF-NEXT: [[VAR9:%.*]] = zext i32 [[VAR4]] to i64 +; WIDENING_OFF-NEXT: [[VAR10:%.*]] = getelementptr inbounds i32, ptr addrspace(1) poison, i64 [[VAR9]] +; WIDENING_OFF-NEXT: br label [[BB2]] +; WIDENING_OFF: bb11: +; WIDENING_OFF-NEXT: ret void +; +bb: + %var = load atomic i32, ptr %p1 unordered, align 8 + %var1 = load atomic i32, ptr %p2 unordered, align 8 + br label %bb2 + +bb2: ; preds = %bb8, %bb + %var3 = phi i32 [ %var4, %bb8 ], [ %var, %bb ] + %var4 = add i32 %var3, -1 + %var5 = icmp ne i32 %var3, 0 + %var6 = icmp ult i32 %var4, %var1 + %var7 = and i1 %var5, %var6 + br i1 %var7, label %bb8, label %bb11 + +bb8: ; preds = %bb2 + %var9 = zext i32 %var4 to i64 + %var10 = getelementptr inbounds i32, ptr addrspace(1) poison, i64 %var9 + br label %bb2 + +bb11: ; preds = %bb2 + ret void +}