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1; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 22; RUN: llc < %s | FileCheck %s3 4target triple = "aarch64-unknown-linux"5 6; Check an "expensive" construction of a constant is hoisted out of a loop7define void @f0(ptr %a, i64 %n) {8; CHECK-LABEL: f0:9; CHECK: // %bb.0: // %entry10; CHECK-NEXT: str x30, [sp, #-48]! // 8-byte Folded Spill11; CHECK-NEXT: stp x22, x21, [sp, #16] // 16-byte Folded Spill12; CHECK-NEXT: stp x20, x19, [sp, #32] // 16-byte Folded Spill13; CHECK-NEXT: .cfi_def_cfa_offset 4814; CHECK-NEXT: .cfi_offset w19, -815; CHECK-NEXT: .cfi_offset w20, -1616; CHECK-NEXT: .cfi_offset w21, -2417; CHECK-NEXT: .cfi_offset w22, -3218; CHECK-NEXT: .cfi_offset w30, -4819; CHECK-NEXT: mov x21, #1 // =0x120; CHECK-NEXT: mov x19, x121; CHECK-NEXT: mov x20, x022; CHECK-NEXT: movk x21, #22136, lsl #1623; CHECK-NEXT: mov x22, xzr24; CHECK-NEXT: movk x21, #4660, lsl #4825; CHECK-NEXT: cmp x22, x1926; CHECK-NEXT: b.ge .LBB0_227; CHECK-NEXT: .LBB0_1: // %loop.body28; CHECK-NEXT: // =>This Inner Loop Header: Depth=129; CHECK-NEXT: ldr w0, [x20, x22, lsl #2]30; CHECK-NEXT: mov x1, x2131; CHECK-NEXT: bl g32; CHECK-NEXT: str w0, [x20, x22, lsl #2]33; CHECK-NEXT: add x22, x22, #134; CHECK-NEXT: cmp x22, x1935; CHECK-NEXT: b.lt .LBB0_136; CHECK-NEXT: .LBB0_2: // %exit37; CHECK-NEXT: ldp x20, x19, [sp, #32] // 16-byte Folded Reload38; CHECK-NEXT: ldp x22, x21, [sp, #16] // 16-byte Folded Reload39; CHECK-NEXT: ldr x30, [sp], #48 // 8-byte Folded Reload40; CHECK-NEXT: ret41entry:42 br label %loop43 44loop:45 %i = phi i64 [0, %entry], [%i.next, %loop.body]46 %c = icmp slt i64 %i, %n47 br i1 %c, label %loop.body, label %exit48 49loop.body:50 %p = getelementptr i32, ptr %a, i64 %i51 %v = load i32, ptr %p52 %w = call i32 @g(i32 %v, i64 1311673392922361857) ; 0x123400005678000153 store i32 %w, ptr %p54 %i.next = add i64 %i, 155 br label %loop56 57exit:58 ret void59}60 61; Check a "cheap" to construct constant is materialised inside a loop.62define void @f1(ptr %a, i64 %n) {63; CHECK-LABEL: f1:64; CHECK: // %bb.0: // %entry65; CHECK-NEXT: stp x30, x21, [sp, #-32]! // 16-byte Folded Spill66; CHECK-NEXT: stp x20, x19, [sp, #16] // 16-byte Folded Spill67; CHECK-NEXT: .cfi_def_cfa_offset 3268; CHECK-NEXT: .cfi_offset w19, -869; CHECK-NEXT: .cfi_offset w20, -1670; CHECK-NEXT: .cfi_offset w21, -2471; CHECK-NEXT: .cfi_offset w30, -3272; CHECK-NEXT: mov x19, x173; CHECK-NEXT: mov x20, x074; CHECK-NEXT: mov x21, xzr75; CHECK-NEXT: cmp x21, x1976; CHECK-NEXT: b.ge .LBB1_277; CHECK-NEXT: .LBB1_1: // %loop.body78; CHECK-NEXT: // =>This Inner Loop Header: Depth=179; CHECK-NEXT: ldr w0, [x20, x21, lsl #2]80; CHECK-NEXT: mov x1, #1450704896 // =0x5678000081; CHECK-NEXT: movk x1, #4660, lsl #4882; CHECK-NEXT: bl g83; CHECK-NEXT: str w0, [x20, x21, lsl #2]84; CHECK-NEXT: add x21, x21, #185; CHECK-NEXT: cmp x21, x1986; CHECK-NEXT: b.lt .LBB1_187; CHECK-NEXT: .LBB1_2: // %exit88; CHECK-NEXT: ldp x20, x19, [sp, #16] // 16-byte Folded Reload89; CHECK-NEXT: ldp x30, x21, [sp], #32 // 16-byte Folded Reload90; CHECK-NEXT: ret91entry:92 br label %loop93 94loop:95 %i = phi i64 [0, %entry], [%i.next, %loop.body]96 %c = icmp slt i64 %i, %n97 br i1 %c, label %loop.body, label %exit98 99loop.body:100 %p = getelementptr i32, ptr %a, i64 %i101 %v = load i32, ptr %p102 %w = call i32 @g(i32 %v, i64 1311673392922361856) ; 0x1234000056780000103 store i32 %w, ptr %p104 %i.next = add i64 %i, 1105 br label %loop106 107exit:108 ret void109}110 111declare i32 @g(i32, i64)112