1; RUN: llc -mtriple=hexagon-unknown-elf < %s | FileCheck %s 2 3; In ISelLowering, when folding nodes (or (shl xx, s), (zext y)) 4; to (COMBINE (shl xx, s-32), y) where s >= 32, 5; check that resulting shift value does not create an undef 6 7 8target datalayout = "e-m:e-p:32:32:32-a:0-n16:32-i64:64:64-i32:32:32-i16:16:16-i1:8:8-f32:32:32-f64:64:64-v32:32:32-v64:64:64-v512:512:512-v1024:1024:1024-v2048:2048:2048" 9target triple = "hexagon" 10 11; Function Attrs: nofree nosync nounwind memory(readwrite, inaccessiblemem: none) 12define dso_local void @foo(i64* nocapture noundef %buf, i32 %a, i32 %b) local_unnamed_addr { 13; CHECK-LABEL: foo: 14; CHECK: // %bb.0: // %entry 15; CHECK-NEXT: { 16; CHECK-NEXT: r[[REG0:[0-9]+]] = addasl(r2,r1,#1) 17; CHECK-NEXT: r[[REG2:[0-9]+]] = asl(r1,#1) 18; CHECK-NEXT: } 19; CHECK-NEXT: { 20; CHECK-NEXT: r[[REG1:[0-9]+]] = addasl(r[[REG0]],r1,#1) 21; CHECK-NEXT: } 22; CHECK-NEXT: { 23; CHECK-NEXT: jumpr r31 24; CHECK-NEXT: memd(r0+#8) = r[[REG2]]:[[REG1]] 25; CHECK-NEXT: } 26entry: 27 %arrayidx = getelementptr inbounds i64, i64* %buf, i32 1 28 %add0 = shl nsw i32 %a, 1 29 %add1 = add nsw i32 %add0, %b 30 %add2 = add nsw i32 %add1, %add0 31 %ext0 = zext i32 %add0 to i64 32 %shift0 = shl nuw i64 %ext0, 32 33 %ext1 = zext i32 %add2 to i64 34 %or0 = or i64 %shift0, %ext1 35 store i64 %or0, i64* %arrayidx, align 8 36 ret void 37} 38